Sonic the Hedgehog 2
Sonic the Hedgehog 2 is a 2022 action adventure comedy film based on the Sonic the Hedgehog series and the sequel to the 2020 film Sonic the Hedgehog. It is the second entry in the Sonic the Hedgehog film series by Paramount Pictures.
The suggestion for a sequel to Sonic the Hedgehog was first brought up by Jim Carrey when he envisioned a second film entry where he got to reprise his role as Dr. Robotnik. Following the fairly successful release of Sonic the Hedgehog, director Jeff Fowler and several other cast members expressed an interest in developing a sequel that incorporated more elements from the Sonic games, with James Marsden in particular being revealed to have signed up for multiple sequels to the film. Sonic the Hedgehog 2 was later officially confirmed in May 2020, with most of the previous film's cast set to reprise their roles.
The film released in the United States on 8 April 2022, by Paramount Pictures in association with Sega Sammy Group. It was later announced by Paramount in February 2022 that a sequel, titled Sonic the Hedgehog 3, and a spin-off series, named Sonic the Series, were in development.
On the Mushroom Planet, dawn breaks. As a mushroom rises up in the sunshine, it sets off a mushroom-based, Rube Goldberg-esque mechanism that ends with a mushroom figurine of Sonic, along with other mushrooms, getting squeezed of their juices, which pour into a mushroom cup. Dr. Robotnik then shows up, picking up the cup as he documents his log of how he has been marooned on this planet for 243 days because of Sonic, managing to survive because of a breathable atmosphere and his own intellect (though his efforts to get something tasty from the mushrooms and fungi have all met with repeated, dismal failure). Despite this, Robotnik sees a reason to be optimistic, as he has formulated a plan to get back to Earth and get revenge on Sonic. Having salvaged components from his Eggpod, Robotnik has constructed a beacon. Robotnik makes his final preparations, getting ready to hook Sonic's chaos energy-infused quill up to his masterpiece and see who will come to investigate his signal. However, the moment Robotnik connects the quill, an energy pulse flings him from the beacon and knocks him out, with the pulse extending far into space. After nightfall, Robotnik remains unconscious as a Ring portal appears, with three alien scavengers stepping out of it and slowly approaching him. As one of them reaches for the quill in Robotnik's hand to take it from him, Robotnik wakes up, proceeding to activate different traps that he has set up and easily dispatching the scavengers. With the opposition gone, Robotnik runs toward the Ring portal, only for him to come to a halt as he sees Knuckles appear from the other side. As he approaches Robotnik, he aggressively asks where he acquired Sonic's quill, to which Robotnik explains that he got it from Sonic on Earth and that he will be happy to show him the way.
On Earth, in Seattle, the peacefulness of the city is disrupted when some bank robbers in a hijacked armored truck come driving through the streets with the police hot on their tail. As the bank robbers throws bombs at the police, Sonic is shown standing on a building as he makes some preparations before going after the bank robbers' truck. Jumping into the truck, Sonic knocks out one of the robbers and pushes the other out of the truck before taking the wheel himself. Sonic proceeds to drive recklessly, causing the robbers in the back of the truck to drop bombs on the streets as they get knocked out. Sonic also ungags a male captive onboard the track, who asks who Sonic is. Sonic tries introducing himself as a superhero, but loses focus as he drives. To make matters worse, Sonic's driving sets off the remainder of the robbers' bombs. The captive questions why Sonic is not slowing down, to which Sonic reveals that he cannot reach the brakes, which are blocked by an unconscious robber. Regardless, Sonic insists that heroes can handle this without the police, and so throws the bombs into a garbage truck that they pass by, which blows it up and scatters its trash. However, the captive can still hear an ignited bomb. As Sonic looks for the bomb while not looking at the road, the captive criticizes his performance, then notices that the bomb is stuck in Sonic's back quills. Grabbing it, Sonic throws the bomb into a storm drain on the side of the road. Not long after, Sonic notices that the truck is heading for a public ice cream stand. Spotting some power tools in the truck, Sonic uses them to take it apart at super speed, leaving only its undercarriage to slide to a halt right in front of the ice cream stand, much to the shock of a young boy standing in its path. As the people recover from their stupor, the bomb Sonic threw in the storm drain goes off, resulting in several water spouts emerging from the manholes. Meanwhile, the robbers recover as the Seattle Police Department appears to apprehend them. Standing on top of a building, Sonic declares loudly that no thanks are needed for "Blue Justice". While the captive calls him "a terrible hero", Sonic does not mind as he runs away through the destruction he has caused.
Running back to Green Hills, Montana, Sonic greets Wade at the speed trap behind the welcome billboard before hurrying up to a mountaintop and greeting Green Hills from afar. He then runs back to the Wachowski house and sneaks into his room, only to notice that he got some dirty banknotes stuck to his shoes after the events in Seattle. As he puts them away in a drawer to avoid raising suspicion, Sonic take a look at the map of safe worlds that Longclaw gave him, with a feather from Longclaw falling out of it. Reminiscing on Longclaw, Sonic tells her that he misses her and that he is trying to make her proud. Putting the map and feather away in his pouch, Sonic attempts to get some sleep, but then Ozzie and Maddie come in, with Maddie reminding him that he is supposed to meet Tom. With Ozzie forcing him out of bed, Sonic has no other choice but to get up. Later, Sonic and Tom are out fishing on a lake. As Tom tries to have a nice conversation with Sonic, he notices that the hedgehog has fallen asleep. Soon after, Sonic falls into the water as the boat tilts and gravity does the rest. With Sonic unable to swim, Tom pulls him back into the boat. As he helps Sonic dry off and warm up, however, he points out that he discovered Sonic's absence last night by coming into his room and discovering his attempt to fake his presence with a shoddy dummy and a taped recording. Tom then shows Sonic a newspaper documenting the mayhem he created in Seattle and asks him how many times they are going to have this discussion about the hedgehog lying, sneaking out, and trying to be a superhero. Tom tries to tell Sonic that he is being irresponsible and reckless, but Sonic insists that the city was already a mess and that he was a hero back there. Tom, however, remarks that heroes do not put others in danger with their actions, to which Sonic asks Tom to be his friend and not his dad. He tries to insist that he can take care of himself, but Tom tells him that being a hero is about taking responsibility for other people and that he still has some growing up to do before he can be the hero he wants to be. He also adds that a moment will come where his powers are needed, but that the moment will choose him. Sonic is surprised by Tom's insight, and Tom explains it is a "Wachowski family special" that he got in the lake they are on from his father, who always tried to steer him in the right direction, like how he and Maddie are trying to do the same with him. This convinces Sonic to agree to being more responsible until his moment arrives. The two then high-five, and Sonic celebrates by using his speed to push their boat across the lake at high speed, much to Tom's dismay.
Later, back in the Wachowski house, Tom and Maddie are preparing to head to Hawaii for Rachel's wedding. As they enter their living room, they find Sonic and Ozzie playing the roles of flight attendants in front of a Ring portal leading to the couple's destination. After giving Tom and Maddie their send-off, Tom asks for a hug, but Sonic declines, seeing as he is going to be home alone for the first time and is therefore too mature for it. At Maddie's suggestion, they power-bump instead. Sonic then gives Tom a Ring that they can use to go home with, and the couple bids Sonic goodbye as the portal closes. Once they are gone, though, Sonic is determined to have fun with Ozzie for the next two days while he has the opportunity. Sonic proceeds to party it up, leaving the house in a mess along the way. Meanwhile, somewhere far away, Tails appears from a Ring portal. Consulting his Miles Electric, Tails proclaims that he has found "him" through the device's readings and hurries out to find that person before it is too late, taking flight with his twin-tails as he heads towards Green Hills.
As night falls on Green Hills, Tails arrives in town and decides to use a car to get around without being spotted, choosing Wade's police cruiser for the job. Meanwhile, Sonic is chilling when he notices that Tom is calling him on his phone via FaceTime. Cleaning up the house in a flash, Sonic answers Tom's call. While Sonic acts casual, Tom knows Sonic is up to something. Regardless, Sonic convinces him to just relax and enjoy his vacation, with Tom assured that Sonic can clean up his mess in good time. After then having a brief chat about Rachel's fiancé, Randall, Tom decides to introduce himself and hangs up on Sonic after encouraging him to stay out of trouble. When Tom tries to greet Randall however, he tells him with hostility that he should tear him apart for what he did to Rachel back in San Francisco. However, Randall quickly drops the façade and tells a relived Tom that he is just kidding. The two proceed to talk about how Rachel is not fond of Tom, with Randall encouraging Tom to work things out with her. Rachel and Maddie come over, with Rachel seemingly happy about Tom's presence and insisting that they bury the hatchet. As they hug it out, however, Rachel quietly tells Tom that she will end him if he screws up her wedding, showing that she is still somewhat cross over the events in San Francisco.
Back in the Wachowski house, Sonic is watching TV with Ozzie when a blackout suddenly hits. Although thrilled at first, Sonic notices something is wrong when the TV turns on by itself and the lights start to flicker. As he nervously heads for the front door to investigate, the doorknob gets cut off, leaving the door to open and reveal Robotnik. Sonic is initially shocked by this development, but steels himself and tells Robotnik that while he is not sure how he returned, he still made a mistake coming here. Robotnik, however, retorts back and threatens to have his revenge on him and the Wachowskis. Enraged by these declarations, Sonic jumps at Robotnik, intent on hitting him with a chaos energy-charged punch, only for the doctor to playfully step aside and reveal Knuckles, who punches Sonic through a wall and the TV. As Robotnik introduces Knuckles, Sonic picks up his pouch and tries charging at Knuckles, only to get punched through another wall and into the backyard by the echidna, who demands to know where "it" is. Taking it as a challenge, Sonic charges at Knuckles again with a spin attack, only for Knuckles-- who has deemed the hedgehog an inexperienced and "unworthy" foe-- to stop it with one hand and knock Sonic down. As he pins Sonic against a tree, Knuckles proclaims his intended destiny to restore the "ultimate power" to the home of his people. While Sonic insists that he has no idea of what he is talking about, Robotnik, who has been watching the fight from the sidelines, takes an interest in Knuckles' mention of "ultimate power." After labeling Sonic an "apprentice of Longclaw", Knuckles proceeds to elaborate that her people and his people, the echidnas, were sworn enemies, and that he will now kill Sonic for being an associate of the opposing side. Suddenly, though, Tails appears in Wade's police cruiser, which he rams Knuckles with. With Tails saying he is on his side and Knuckles recovering, Sonic jumps into Tails' car, which Tails uses his gadgets to drive. After shaking off Robotnik when he jumps onto the hood, the two drive away, with Knuckles hot on their heels. After an amazed Tails has introduced himself, Sonic demands an explanation for everything. Tails proceeds to tell him about Knuckles, who is the most dangerous warrior in the galaxy and obsessed with finding the Master Emerald. Sonic dismisses the Emerald as a bedtime story, but Tails tells him that Knuckles believes otherwise and that Sonic is the key to its discovery. As Sonic takes the wheel, Knuckles quickly catches up to them and begins tearing the car apart. Tails, however, has them drive over a cliff. To Sonic's surprise, Tails is able to haul them to safety by using his twin-tails as helicopter blades. Meanwhile, Knuckles manages to get off the car and latch onto the cliff, leaving the car to explode when it hits the ground below.
As Sonic and Tails fly away, Robotnik catches up in a riding mower and watches. In order to proceed with his plans, Robotnik uses his Robotnik Control Glove to call Agent Stone, who has become the owner of the Mean Bean Coffee Café in Green Hills. As a sad Stone wonders where Robotnik is, he gets his message on his smartwatch. Closing his café and making it look like it failed a health inspection, Stone uses the shop's advanced systems to send a pod located in orbit to Robotnik, all while Stone joyfully proclaims Robotnik's return. Following his pod's arrival, Robotnik arms himself with new clothes, a tune-up, equipment, and Badniks. Meanwhile, Knuckles is climbing up the cliff until Robotnik intrudes from above, asking him about the Master Emerald. Knuckles insists that it does not concern him and that their deal is over now that he has gotten him off the Mushroom Planet. In response, Robotnik helps Knuckles back up with his Badniks and insists that he needs him to navigate Earth. Furthermore, Robotnik offers to help him find the Master Emerald, which Knuckles can then use to destroy Sonic. With Knuckles seeing that Robotnik is suggesting an alliance, the two shake hands on the deal, with Knuckles crushing Robotnik's hand due to his own brute strength. With Knuckles convinced of his commitment, Robotnik calls in his Egg Mobile from the pod.
Meanwhile, Sonic and Tails have gone to Wade for help. As they get acquainted with Wade's garage, Sonic and Tails try to figure out why Knuckles thinks Sonic is the key to finding the Master Emerald. When Tails mentions a connection, Sonic recalls that Longclaw's map shows the image of an emerald, which he was previously unable to figure out. After Sonic pulls the map from his pouch, it starts to glow. He drops it, and a magical projection of Longclaw appears to deliver a message to Sonic, saying that it was made in case something happened to her. She also reveals that Earth was chosen as Sonic's new home planet for a reason, as it is the secret hiding place of the Master Emerald, a relic that has the power to turn thoughts into reality and can threaten all life in the universe if it ends up in the wrong hands. She passes her duty of watching the Emerald over to Sonic, who sees this as his moment. Longclaw then tells Sonic to follow the map to the Master Emerald and keep it safe before ending her message with her recognition of Sonic's special heart and a loving goodbye, leaving Sonic both saddened and determined not to let her down. Following an awkward remark from Wade in which he believes Longclaw is Tails' dad, Sonic sees that the map has changed to show that there is a compass in Siberia that will lead to the Master Emerald. Tails then adds that with Knuckles also on-planet, it will be a race for the Emerald. After another goofy remark from Wade about having known a kid named Knuckles from middle school (and worrying if he and the Knuckles Sonic and Tails are dealing with are the same person), Sonic decides to find the compass with Tails and opens a Ring portal to Siberia. Tails, however, is hesitant to come along, insisting that that he is not a "field guy". Sonic, however, convinces Tails to come along by promising to protect him, a promise of which they seal with a power-bump.
Back in the Mean Bean Coffee Café, Stone has prepared a latte for Robotnik, who soon after arrives in the café. While Stone is surprised by Robotnik's different appearance, he nonetheless expresses his loyalty with Robotnik's favorite latte. Tasting it, Robotnik notes that it could use some mushroom, referencing his dismal attempts with the fungi back on the Mushroom Planet. Knuckles arrives and takes offense to Stone when he calls him a porcupine. Regardless, Stone welcomes him upon hearing of his pride in his heritage and his resolve to fulfill his goal, which they mark with a handshake that crushes Stone's hand. Robotnik decides that they should renovate the café, and Stone transforms it into their high-tech headquarters with a simple code phrase (which is Robotnik's aforementioned favorite latte).
On Hawaii, Tom is having a rough volleyball match against Randall and his team. Despite this, the two of them remain on good terms. As they get talking, Randall notes that his team is more than that: they are his life-long squad. Afterward, two of them promise to hang out some more with extreme activities, although Tom regrets it after he leaves. He then meets Jojo and Maddie, with Jojo revealing her duty as ringbearer for Rachel's wedding. At first, it seems that Jojo has lost one of the rings, but Tom soon reveals that he is just playing with her by giving her back the lost wedding ring. As Tom and Maddie get reacquainted, Tom looks at Randall's team and wishes that Sonic had friends like that. Maddie, however, tells him to relax and not worry about Sonic, sure that he will find his way.
Meanwhile, in Siberia, Sonic and Tails are caught in a snowstorm, with Sonic ranting about how they cannot find their way. Unable to get a reading on the compass in this storm, Tails suggests turning back. Sonic, however, spots a public restaurant nearby and says that they should take shelter in there. Tails is worried, but Sonic assures him that humans are very welcoming. Putting on some disguises, Sonic and Tails enter the restaurant, only to get an icy and threatening reception from the patrons. After getting a table and ordering a pair of beef stews using the translator on his Miles Electric, Sonic inquires Tails about his gadgets. Tails reveals that he made them himself and remarks that he found Sonic thanks to them. He proceeds to explain that he first detected Sonic due to the energy blast that occurred when Sonic had his emotional breakdown on Green Hills' baseball field reaching his home planet; taking interest, he later saw Sonic save the town from Robotnik, much to his amazement. With Sonic equally amazed by how much Tails knows about him, the fox cub reveals that when he learned that Knuckles was after Sonic, he had to do something and left to warn him. Immediately after, Sonic gets a text message from Tom, prompting Sonic to write one back.
Back in Green Hills, Robotnik and Stone have intercepted Sonic and Tom's text messages. As Knuckles displays his limited understanding of technology, Stone quietly asks Robotnik why they are working with an "imbecile" like him. Robotnik explains that the Master Emerald he seeks can power his wildest designs and both get his genius recognized across the galaxy and let him command unimaginable power. Reading further into Sonic's lie of enjoying the night at home, Knuckles believes Sonic has returned there. Robotnik corrects him, though, having pinpointed his location in Siberia with his technology. After fiddling with a hologram of Sonic, Robotnik and Knuckles head out. Knuckles, however, asks what to do about Stone, to which Robotnik insists that they ditch him for now. Knuckles is not pleased with this decision, labeling it a "dishonor", but Robotnik notes that it is how he rolls.
In Siberia, Sonic and Tails get the wrong dishes. Tails tries to correct the waitress, but his translator glitches and turns his question into an insult. Sonic attempts to calm the mob down, but again, Tails' translator turns it into an offense, prompting the patrons to tear off their disguises for everyone to see. Branded as monsters, Sonic and Tails are grabbed by the patrons, who prepare to throw them into the fireplace. Fortunately, Tails finds a Siberian custom on his Miles Electric and declares "Pivonka", which stops the patrons in surprise. Soon after, everyone's attention turns to a single man in the restaurant, who accepts the Pivonka challenge. As Sonic asks what "Pivonka" is, Tails explains that it is a Siberian custom for settling disputes: if they win, they let them go, but if they lose, they get thrown in the fire. As room is made for the challenge, Sonic suggests taking the map and leaving, but Tails notices that he left the map on the table, which the waitress puts away. The Pivonka challenger then steps forward and begins dancing to local music, which makes Sonic realize that "Pivonka" is a dance-off. In an attempt to get the map, Sonic and Tails try to dance, but cannot get the rhythm right. Meanwhile, the map ends up stuck to the Pivonka challenger's shoe. Sonic tries to get it, but the Pivonka challenger gets it first and dares Sonic to come and get it. Meanwhile, Tails starts to lose his nerve as everyone begins calling them "freaks". Despite this, Sonic is unintimidated and insists that he needs his help, but Tails is too nervous, not used to being out and about like this and knowing the situation is his fault. Sonic then gets an idea. Hooking his phone up to the speakers, Sonic has him and Tails dance to their own music in their own way, which is much more successful. Additionally, with Tails supplementing their choreography with holograms of themselves using his Miles Electric, Sonic and Tails are able to beat the Pivonka challenger and get back the map, leading the impressed patrons to hail them as the winners, lift them in the air, and cheer for them.
In the aftermath, Sonic and Tails are resting, with Tails expressing amazement at Sonic's ability to win the Pivonka. Sonic then tells Tails, as his friend, to stick with him if he wants to know more about Earth. Surprised, Tails asks Sonic if he really means that he is his friend, which Sonic insists, prompting a hug from Tails. Tails then explains that he never had any friends growing up because people in his village thought his twin-tails were weird. However, he noticed that Sonic became a legend despite being weird himself and was both inspired by him and spurred to help him because of that. With Sonic relating to Tails' past, he tells the fox that he is happy to have him around, a sentiment Tails agrees with. Getting tired, Tails falls asleep while Sonic's back is turned. Tucking Tails in, Sonic goes to sleep too, with Tails' twin-tails covering him. The next morning, however, Sonic wakes up to find a patron hugging him in her sleep, much to his uneasiness.
Not long after, Sonic is being carried through the mountains by Tails, who has pinpointed the coordinates on the map now that the blizzard has cleared up. There, they find an ancient temple inside a hole in a mountain. Heading into the temple, the pair finds a wall with ancient inscriptions. Upon Sonic's inquiry, Tails begins translating it, revealing that ages ago, the fearsome warriors of the echidna tribe forged the seven Chaos Emeralds into the most unstoppable weapon ever created: the Master Emerald. With its power, a single warrior could defeat entire armies. Believing that no one should have such power, an ancient order of heroes, the owls, recovered the Emerald and swore to protect it from evil, thereby sparking a centuries-long conflict between the two orders. Heading deeper into the temple, Sonic and Tails find a giant owl statue with inscribed slots on it. Recognizing the symbols on the slots from Longclaw's map, Sonic aligns the symbols as displayed on the map. This triggers a mystical mechanism that reveals the compass leading to the Master Emerald, which Sonic grabs.
Unfortunately, Robotnik and Knuckles arrive in the Egg Mobile immediately after with Badniks, who destroy the door out of the temple. The two thank them for doing all the hard work and seek to take the compass off their hands. After some banter, Robotnik fires a missile that Sonic redirects into the owl statue, causing the temple to start caving in and open a way for them. Heading for the exit, Sonic snatches a panel from a Badnik that he destroys, before he and Tails reach a steep drop off a mountainside. After telling Tails to take the high route, Sonic heads down the mountain on the panel like a snowboard. However, the Badniks pursue and open fire on him, with Tails unable to get close due to the fire and Robotnik. Knuckles, who got stuck in the temple, escapes and imitates Sonic's makeshift snowboard maneuver to pursue him. Meanwhile, Sonic uses snowballs at high speed to throw off the Badniks, only to run into another swarm of them. However, Sonic manages to dodge them all at super speed before using a Buzz Bomber to destroy the others.
As Sonic continues his trip, Knuckles soon catches up to him, much to Sonic's annoyance. The two fight while they slide down the mountain with Knuckles eventually managing to knock Sonic off-balance, causing him to land on the edge of a cliff; all of his Rings fall out of his pouch in the process, leaving him with no means to escape. Climbing back up to see Knuckles in front of him, Sonic mocks his opponent's temper, to which Knuckles replies that he knows nothing about him. Sonic bitterly retorts that he knows echidnas have a habit of ruining his life, but Knuckles tells Sonic that he lost everything because of him. He explains that years ago, his tribe was on the verge of its greatest victory. Having located Longclaw, the last of the owl warriors, the tribe were heading out to get her Emerald secrets. A young Knuckles wanted to join them, but his father kept him from coming along, insisting that his moment to honor their tribe would come, but that this was not the moment. However, he never saw his father or his tribe again after they left. Sonic sympathizes with Knuckles' story, recalling his last moments with Longclaw and sadly admitting that they both lost everything that day. Hearing this, Knuckles begins to soften up, only to be trapped by Tails' electric bindings. This causes Knuckles to believe Sonic was deceiving him as he breaks free of the restraints, with the hedgehog attempting to explain that what he said was genuine. Sonic tries passing the compass over to Tails, but Robotnik swoops in and snatches the compass before firing some missiles behind him, the explosions of which knock Tails out cold. Immediately concerned for his new friend, Sonic runs over to help, begging him to wake up. Knuckles hitches a ride with Robotnik, noting that Sonic chose Tails over the compass; Robotnik simply writes off this friendship as a weakness, much to Knuckles' suspicion. Immediately after, an avalanche occurs, forcing Sonic to take Tails and try snowboarding away as Robotnik and Knuckles escape. With no other choice, he tries calling Tom on his phone.
Back in Hawaii, Rachel and Randall's wedding ceremony is underway, with a biplane arranged by Randall flying by and carrying a banner attributing the couple. However, Tom's ringtone disturbs the ceremony. He tries to put his phone away, but Sonic calls again, much to Rachel's angry annoyance. This time, Tom sees from a text message from Sonic that it is an emergency, walking away from the ceremony to answer the call. Although angry at first, Tom notices that Sonic is out snowboarding, with Sonic telling him to use the Ring he gave him to open a portal for him to escape the avalanche through. Tom proceeds to throw the Ring, but nothing happens. Taking a closer took, Tom realizes he got the Ring mixed up with Rachel's wedding ring when he was teasing Jojo, and that Randall is currently putting it on Rachel. With Sonic urging him to hurry, Tom disrupts the wedding ceremony and is forced to punch Randall to get the Ring back. Tom then opens the Ring portal in front of the wedding reception; Sonic and Tails blast through it, followed by a wave of snow that buries everyone.
As everyone recovers, Tom is notably upset at Sonic while Maddie wants an explanation. Sonic gives a quick rundown of what has happened since yesterday before turning his attention to Tails, who is still unconscious. However, he is soon after hit by a taser net and knocked out as every one of Randall's guests draw taser pistols at the Wachowskis, much to Rachel's confusion. Commander Walters then shows up and reveals that he and his associates are federal agents, including Randall. Realizing that her wedding was a setup as a part of Walters' "Operation: Catfish" and that nearly everyone involved is an agent, Rachel loses her temper and tries to attack Randall, who tries to apologize, but is restrained. Meanwhile, Sonic and Tails are hauled away in cages. Concerned, Tom begins to punch the agents doing so in order to stop them, but is held back by Randall and taken away along with them. Maddie tries telling Walters that Sonic is no threat, but Walters insists otherwise and declares their days of aiding and abiding him are over before ordering for Sonic, Tails, and Tom to be secured in the hotel for now. Rachel, however, still wants an explanation for everything. Walters explains that following the incident in San Francisco, a global taskforce named Guardian Units of Nations (G.U.N.) was created to protect the Earth from alien threats, which includes Sonic. Maddie however, insists that Robotnik is a threat, too. Walters rebutts that Robotnik is dead, but Maddie tells him otherwise and mentions that he is taking away the only ones that can stop him, prompting Walters to call in aid to find him before taking his leave. Jojo then brings Maddie Tails' backpack with gadgets, which inspires Maddie to go save Sonic, Tails, and Tom. Rachel, wanting a word with Randall, is in on it.
While Tom, Sonic and Tails are taken into the hotel, Sonic's only concern is Tails' wellbeing, desperately begging for the agents to get him some help. Meanwhile, Maddie and Rachel scope out the hotel, which is infested with G.U.N. agents. Maddie then decides to go after Tom and Sonic while an emotionally unstable Rachel wants to get even with Randall. Arming themselves with Tails' gadgets, the two head for the hotel. Upon encountering their first agent, Rachel throws a gadget that sends the agent flying high into the sky, allowing them to proceed. Eventually finding the place where Sonic, Tails, and Tom are being held, Maddie and Rachel split up to find their respective targets. Just as Maddie enters the hotel, however, she is surrounded by G.U.N. agents. Fortunately, Rachel comes to her rescue with a flying homing gadget from Tails that knocks the agents out, allowing Maddie to continue. Meanwhile, Randall, remorseful over what he did to Rachel, tries to have a toast with Walters, only for the agent that was lifted into the sky to come back down and warn them of Maddie and Rachel's attack. Immediately after, a furious Rachel arrives in a golf cart, crashing into the ceremony's set pieces while amazing Randall with her passion. As Randall tries explaining himself to an understandably upset Rachel, Walters threatens her with a taser pistol. When Rachel refuses to back down, Walters fires, only for Randall to take the shot for her. Walters expresses his disappointment with Randall, but nonetheless takes aim at Rachel again. Rachel, however, takes out a ray gun made by Tails and blows her wedding cake to pieces with it, showing she has the better firepower and causing Walters to surrender. Rachel then confronts Randall, asking if their love was ever real. Randall then admits that while he did not think think he could love others, he still ended up falling in love with her. With that, they both kiss.
Back inside the hotel, Maddie finds and frees Sonic, Tails, and Tom from their restraints. Meanwhile, Robotnik, Knuckles, and some Badniks arrive at an island not too far away via a Ring. Using his control glove's scanner, Robotnik locates a pedestal in the sand which Knuckles inserts the compass into. Soon after, a mystical mechanism is activated, and the sea in front of them split apart to reveal an ancient temple in the middle of it. Back on Hawaii, Maddie is tending to the still-unconscious Tails when she, Sonic, Tom, and a bound and gagged Walters notice storm clouds and a green pillar of energy on the horizon. Sonic recognizes it as a sign that Robotnik and Knuckles have found the Master Emerald. Tom suggests that they make a plan together, but Sonic refuses, saying that there is no time for a plan and that he is the only one fast enough to stop things before they worsen. Tom and Maddie disagree with his course of action, but Sonic, after expressing his sorrow over allowing someone who idolizes him to nearly get killed on his watch and blowing his chance to be a hero, declares that he is not letting anyone else get hurt in his attempt to make things right and runs off. Tails wakes up immediately after and tries to follow Sonic, but is too injured to keep up. Tom and Maddie try to tell him to rest, but Tails grimly informs them that they have no idea what Sonic is up against. Tom and Maddie then turn to Walters, with Tom asking if he believes them now; humbled, Walters can only nod his head. Meanwhile, back in Green Hills, Wade heads to the Mean Bean Coffee Café as he patrols the town (on scooter, since his cruiser was destroyed), only to discover that the café is closed. Suspicious, Wade takes a peek inside, only to see Stone fiddling with the equipment as he designs a new look for Robotnik. Intruding on Stone, Wade holds him at gunpoint while having him show that his control gloves are not dangerous with outlandish demands.
Back on Hawaii, Sonic is at the coastline. Despite his dislike of water, Sonic pulls himself together and charges up his chaos energy before running at full speed across the sea. However, the waves worsen as he gets further away from the shore, making it hard for him to navigate, and he eventually wipes out. Fortunately, he wakes up soon after, having washed up on the island's shore, and finds the temple. Inside said temple, Robotnik, Knuckles, and some Badniks are making their way through a labyrinth of traps, barely managing to stay one step ahead of them. Along the way, Robotnik's accompanying Badniks are destroyed by the traps. After just barely avoiding getting crushed by a spiked ball and swinging axe, Robotnik decides that they should approach the labyrinth more scientifically and so deploys a miniature Badnik from his glove that scans the labyrinth ahead of them, which Robotnik uses to form a holographic map with his control glove for them to follow. Elsewhere, Sonic enters the labyrinth and decides to run through it at high speed in hopes of reaching the center, either moving too fast for the traps or barely dodging them along the way. Meanwhile, Robotnik and Knuckles reach the center of the temple after Knuckles punches down a wall. Seeing the Master Emerald's pedestal ahead of them, Knuckles proclaims that order will be restored thanks to their collaboration. Robotnik, however, declares Knuckles useless now and prepares to backstab him with his control glove's taser, but the action is interrupted when the two hear Sonic speed through the labyrinth before crashing through the roof and landing in front of them. Furious, Knuckles asks Sonic why he keeps interfering with his destiny, to which Sonic replies that he is doing it to protect his friends and family, and that if he wants the Master Emerald, he has to get through him. Sonic then speeds toward the Master Emerald, but Knuckles intercepts him, and the two engage in an intense fight-- one Sonic says aloud that he does not want to have with Knuckles, but the echidna is not leaving him much choice.
As Sonic and Knuckles clash, the tide of battle constantly shifting, Robotnik closes in on the Master Emerald. As Knuckles gets Sonic pinned down, Sonic notices this and points it out to him. Knuckles, though unconvinced at first, eventually notices as well and calls out Robotnik for breaking their deal and supposed friendship, but Robotnik mocks him for his lack of intelligence and gullibility before grabbing the Master Emerald. As an energy surge is unleashed, Robotnik absorbs the Master Emerald as he warps away in a flash that causes the temple to crumble. With water flooding in, Sonic starts to flee. However, he then notices that Knuckles has been pinned down by a pillar, unable to get free on his own and losing consciousness in the rising water. Forced to brave his fear once again, Sonic gets down to Knuckles using a falling boulder and tries moving the pillar. Knuckles comes around, and they work together to lift the pillar long enough for Knuckles to escape to the surface. Sonic, however, cannot swim up to follow him and almost drowns, but he is saved at the last moment by Knuckles, who gets them back to the island. There, Sonic tries asking Knuckles about why he saved him. Knuckles expresses that he is in no mood to talk, but Sonic provokes him into answering by throwing sand balls at him. Knuckles reveals that he was repaying Sonic for saving him, despite not understanding his tactics for doing so. Sonic replies, however, that he could not just let him die, which confuses Knuckles further, given that he has been trying to destroy him ever since they met. Sonic proceeds to recite Tom's advice about how being a hero means taking responsibility for others, which Knuckles recognizes the wisdom in. Soon after, Tails arrives at the island in the Tornado, much to Sonic's happiness. Sonic then tries convincing Knuckles to come with them and stop Robotnik. Knuckles asks Sonic how he can be so hopeful and free despite having lost everything like himself and his numerous failures, to which Sonic explains that he found a new family and friends to help him through it. After Sonic informs Knuckles that he no longer has to be alone, the two seal their newfound friendship with a handshake that crushes Sonic's hand, much to Sonic's disbelief.
Back in the Mean Bean Coffee Café, Wade has tied up Stone and is trying to interrogate him. However, his attempts at playing good cop/bad cop in order to get answers have proven fruitless. Immediately after, Robotnik teleports into the café in an Master Emerald-empowered state. Feeling an elevated sense of self, Robotnik adjusts himself to his new powers as he teleports around, quickly forcing Wade to surrender while freeing Stone. Stone then reveals to Robotnik that the café is surrounded with armed personnel and military vehicles from G.U.N., but Robotnik tells him that he has a solution to this. Outside, Walters arrives in a helicopter with Tom and Maddie where an agent informs him of Robotnik and Stone's presence in the café with a hostage, which Tom and Maddie recognize as Wade when said agent mentions his incompetence as sheriff for the weekend. Robotnik soon after comes out, and both him and Tom have some banter until Walters tells Robotnik that he is finished, as the U.S. government has seized all his assets. In response, Robotnik uses his new powers to tear apart G.U.N.'s vehicles and all other forms of technology in the vicinity and pulling it into a tornado, including Stone upon his request to come with the doctor. Tom and Maddie quickly realize that Robotnik is building something using the pieces.
Meanwhile, Sonic, Tails and Knuckles emerge from a Ring outside of town in the Tornado. After the trio spot Robotnik's tornado and discuss the threat created by his continued usage of the Master Emerald's power, Tails still worries if it is a good idea to bring Knuckles with them. Sonic, however, insists that Knuckles is not evil, just "mixed up", which Knuckles vehemently denies. After Knuckles and Tails then come to a sort of understanding, the trio head towards the tornado, inside of which a machine is forming, which Robotnik boards with an impressed Stone inside a secondary command center in it. The tornado then dissipates as the Giant Eggman Robot is revealed. With the robot responding to Robotnik's movements, he has his machine begin trampling into Green Hills while playing music. While G.U.N. falls back, unable to fight it without their heavy armor or weapons, Sonic and his crew move in in the Tornado. Before Sonic can formulate a plan, though, Knuckles jumps off the Tornado, leaving Sonic and Tails to face the Giant Eggman Robot without one. As Sonic taunts Robotnik, the doctor decides to fire missiles at him. However, Stone has yet to figure out how to operate the Giant Eggman Robot, so Robotnik does it himself, shocking Stone with his energies as he operates the control panel. As a missile barrage is fired from the Giant Eggman Robot, Tails manages to steer the Tornado through the barrage unharmed. Just as Sonic relaxes, he is knocked away by a missile hitting him. Meanwhile, down on the ground, Knuckles approaches the Giant Eggman Robot head-on, branding Robotnik a "deceiver". In response, Robotnik tries to crush him with his robot's hand. Ultimately, Knuckles hits the hand with his best attack, but it does no harm. Back in the air, Tails shoots the Giant Eggman Robot with machinegun gadgets equipped to the Tornado, but they also make no difference. Furthermore, the Tornado's wings get crushed by the Giant Eggman Robot's flappable mustache, which Stone figured out how to use after reading the Giant Eggman Robot's manual. The Tornado subsequently crashes into the ground and is destroyed, but Tails gets out of it in the last moment. Back to Sonic, he has managed to take control of the missile that hit him and redirects it into the Giant Eggman Robot's knee, shaking the machine enough to knock Stone out and leaving Robotnik on his own (though he is more concerned about a hostile workplace report).
As Sonic, Tails and Knuckles reconvene on the main street, Knuckles and Tails are at loss at what to do. Sonic notes that they will only be met with failure if they each attack alone, but also suggests that if they pool their strength, speed, and smarts together as a team, they will stand a chance. With everyone in agreement, Sonic declares that this is their moment. Back in the Giant Eggman Robot, Robotnik sends his infantry of chaos energy-enhanced Badniks after the trio. As the heroes engage the Badniks, Sonic asks Tails for ideas, to which Tails notes that they need to find the Giant Eggman Robot's weak spot. Knuckles suggests the groin as a traditional weak spot, but a mortified Sonic rejects that suggestion. As the Giant Eggman Robot opens fire at them with lasers and they continue to demolish the Badniks, Sonic realizes that he is Robotnik's weak spot, noting that he "[lives] rent-free in this dude's head"; he reasons that if he can rile Robotnik up and get his attention, he will leave the Giant Eggman Robot open to a flanking maneuver from Tails and Knuckles. With the plan agreed upon, the trio splits up, with Sonic running up to the Giant Eggman Robot and taunting Robotnik into pursuing him. As Robotnik has the Giant Eggman Robot follow Sonic out of Green Hills, Tails carries Knuckles onto the backside of the giant robot. At the same time, Tom and Maddie are helping evacuate civilians. Upon stopping a local and his truck, however, Tom and Maddie decide to go get Sonic-- their "kid", as Maddie puts it. They borrow the truck from the local and head out in it.
Out in the forest, Robotnik takes a break to catch his breath, all while Sonic taunts the doctor about his supposed future plans. In response, Robotnik declares his intention to enslave humanity and conquer the entire multiverse before starting to shoot eye lasers at Sonic, who barely manages to dodge them. As he runs across the bridge that leads into Green Hills, Sonic starts to run out of energy and slow down, allowing the Giant Eggman Robot to catch up and fire a nose beam that destroys the bridge and sends Sonic plummeting down into the ravine below. As Robotnik gloats about his superiority to the grounded Sonic, he notices Tails break into the Giant Eggman Robot's cockpit and proceed to use holographic images of himself to swarm him. Declaring that he cannot outsmart him, Robotnik blasts away the holograms, leaving Tails at Robotnik's mercy. It is then that Tails reveals that he is just a distraction. Robotnik then notices Knuckles on the other side of the cockpit, who promptly jumps at him and literally punches the Master Emerald out of him. With Robotnik stunned and back to normal, the Giant Eggman Robot shuts down and falls over, causing Tails and Knuckles to slide out of it with the Master Emerald and land outside, completely knocked out.
Recovering, a frustrated and panicking Robotnik uses his control glove to activate the Giant Eggman Robot's auxiliary power, causing the robot to start powering up again. Meanwhile, an exhausted and injured Sonic comes back to his senses and spots the Master Emerald nearby. As Sonic limps his way towards it, Robotnik manages to get the Giant Eggman Robot back on its feet and walk towards Sonic. In the process, he fails to notice Tom and Maddie arriving from behind in the truck. Then, just before the Giant Eggman Robot can step on Sonic, he picks up the Master Emerald, and is himself picked up by Maddie as she and Tom drive by in the truck. Robotnik has his robot punch the ground just behind the truck, causing it to topple and crash. Crawling out of the wreck, Sonic, Tom, and Maddie spot the Giant Eggman Robot approaching to finish the job. With the Master Emerald in his hands, Sonic believes that they can still defeat Robotnik. As he tries to figure out how it works, though, the Master Emerald crumbles to pieces in a panicking Sonic's hands, releasing the seven Chaos Emeralds from it. Robotnik proceeds to use the Giant Eggman Robot's flamethrower to trap the trio inside a ring of fire. Sonic tells Tom and Maddie to save themselves, but the two of them refuse to leave Sonic behind, insisting that they are family. Declaring their love for each other, Sonic and his foster family accept their fate and prepare to die together as the Giant Eggman Robot brings its foot down upon them. However, just before this, the Chaos Emeralds respond to Sonic's emotions, and he inadvertently absorbs them.
Tails, Knuckles, and Robotnik believe Sonic and the Wachowskis to be dead, but the Giant Eggman Robot suddenly jerks up, concerning Robotnik after he thought he had won. Sonic, now transformed into the golden Super Sonic, is lifting it with incredible power while the others-- including the Wachowskis, who are still alive and well-- watch in awe. After blasting through the Giant Eggman Robot's foot, Super Sonic cuts its head off and coldly tells Robotnik that his plot is over with a furious glare. Robotnik tries talking Super Sonic into a truce, but it is just a distraction as he uses his control glove to have the Giant Eggman Robot take punches at him. Super Sonic, however, effortlessly stops and blows the robot's arms to pieces before piercing it several times at super speed and toppling it over with a tap of his foot, leaving Robotnik to fall with his collapsing robot. As Super Sonic comes back down, the Wachowskis run towards him to congratulate him. Knuckles stops them, however, insisting that Sonic has been corrupted by the power of the Chaos Emeralds and is no longer the hedgehog they knew. Super Sonic proceeds to summon a thunderstorm that focuses into his hand. However, it is then revealed that Sonic was only creating a celebratory chili dog for himself before summoning another one for Knuckles that lands and splatters on his face, causing him to bluntly remark that Sonic is still himself. Super Sonic subsequently relinquishes the Chaos Emeralds-- which disappear to parts unknown-- and reverts back to normal. After Sonic gets hugs from Tom and Maddie, Tails asks why he gave up all that power, to which Sonic explains that he "still has some growing up to do" and that he is fine just being a kid for now. Meanwhile, Knuckles takes the pieces of the Master Emerald and reassembles it. However, now that they finally have the Master Emerald, Knuckles questions what they will do next. As Tails reminds them that both the echidnas and owls wanted to protect the Master Emerald from the forces of evil, Sonic suggests that they start a new order to guard the Master Emerald, starting with the three of them. Knuckles insists that their task is not to be taken lightly, and they must take a vow upon their new tribe's duty, so Tails suggests a power-bump together to mark their oath, which they do.
Some time later, Sonic, Tails, Knuckles, Tom, Maddie, and Ozzie are at Green Hills' baseball field, trying to have some fun with a baseball game. Knuckles, however, has trouble understanding the purpose of the game. Encouraged by Tom and Maddie to just have fun, Knuckles tries it out. When the time comes to hit the baseball, however, Knuckles hits it with a power-bump instead of his bat, sending it flying through the scoreboard. Regardless, Knuckles jubilantly runs around the baseball field, celebrating his perceived win. With their only ball gone now, Maddie suggests they go for ice cream, which everyone agrees upon. Meanwhile, Tom and Maddie are happy on behalf of Sonic, who has found his own squad to grow up with. As Tom congratulates Sonic for his newfound friends, Sonic admits that he has found way more than that, calling him "Dad". As the group proceeds to drive away in the truck, they almost leave the Master Emerald behind in the cooler until Sonic comes back for it.
In a mid-credits scene, G.U.N.'s forces have arrived at the site where the Giant Eggman Robot was destroyed. At the site, Walters is informed by his agent that they have been unable to find Robotnik. While Walters is sure that Robotnik could not have survived, he does not notice Stone, who has disguised himself as a G.U.N. soldier, having survived himself to sneak away undetected. Walters is then informed by his agent that as they were removing Robotnik from their databases, they found a file dating back to over fifty years ago. This file contains coordinates to a well-hidden black site, and Walters realizes, much to his dread, that it concerns "Project Shadow". Meanwhile, in a remote research facility, a capsule slips out, inside of which a black hedgehog awakens, his eyes crackling with chaos energy.
- Ben Schwartz as Sonic the Hedgehog, an anthropomorphic blue hedgehog who can run at supersonic speeds. Having settled into Green Hills, Sonic is ready for more freedom and to fight injustice. However, he soon finds himself called into action when his arch-nemesis, Dr. Robotnik returns to Earth seeking the Master Emerald.
- Benjamin L. Valic as young Sonic (archived audio).
- Colleen O'Shaughnessey as Miles "Tails" Prower, an anthropomorphic fox who can fly using his two twin-tails. As Robotnik returns to Earth with a new plan in mind, he teams up with Sonic to stop Robotnik, becoming the former's sidekick.
- Idris Elba as Knuckles the Echidna, a serious yet gullible anthropomorphic echidna who is a formidable fighter and can climb walls. Having teamed up with Dr. Robotnik, he comes to Earth seeking the Master Emerald.
- Donna Jay Fulks as Longclaw, an anthropomorphic owl and Sonic's childhood guardian who sacrificed herself to bring Sonic to Earth.
- Jim Carrey as Dr. Robotnik, an evil human scientist and Sonic's nemesis, who's seeking global domination. After being defeated and banished to the Mushroom Planet by Sonic in the first film, he returns to Earth with a new ally seeking the Master Emerald, a gem with the power to both create and destroy civilizations while exacting his revenge against the blue hedgehog.
- James Marsden as Tom Wachowski, the sheriff of Green Hills, Montana, who helped Sonic recover his Rings and defeat Robotnik in the first film, after which he took in Sonic as somewhat of a foster child. Now, Tom has approved of Sonic's desire for more freedom by leaving him home for himself while he and Maddie go on a vacation.
- Tika Sumpter as Maddie Wachowski, Tom's wife and the respected veterinarian of Green Hills, Montana, who helped Sonic defeat Robotnik in the first film. Afterward, she and Tom took in Sonic as somewhat of a foster child. Now, in response to Sonic's desire for more freedom, she and Tom have decided to go on a vacation while letting Sonic stay home.
- Natasha Rothwell as Rachel, Maddie's sister who disapproves of Maddie's marriage with Tom.
- Lee Majdoub as Agent Stone, Dr. Robotnik's faithful assistant.
- Shemar Moore as Randall Handel, the fiancé of Rachel, whom he is to marry in Hawaii, and an undercover Guardian Units of Nations (G.U.N.) agent.
- Adam Pally as Wade Whipple, Tom's friend and chief deputy of Green Hills.
- Tom Butler as Commander Walters, the Vice Chairman of the Joint Chiefs of Staff and founder of G.U.N.
- Melody Nosipho Niemann as Jojo, Rachel's daughter and the niece of Maddie and Tom.
Before the announcement of the film, Jim Carrey revealed in a promotional interview for the first film that he could imagine developing the character of Robotnik for a sequel and that the expansion of the character could lead up to that, stating "I wouldn't mind going to do another one because it was so much fun, first of all, and a real challenge to try to convince people that I have a triple-digit IQ... There is so much room, you know, Robotnik has not reached his apotheosis." It was later stated by Sonic the Hedgehog director Jeff Fowler in March 2020 that he had planned a potential sequel for Sonic the Hedgehog to involve more elements from the Sonic the Hedgehog video games. It was also stated by James Marsden in March 2020 that he had signed on for multiple sequels to Sonic the Hedgehog.
In April 2020, Marsden revealed that he was interested in a sequel to Sonic the Hedgehog that includes other characters from the Sonic the Hedgehog video game universe, including Tails, who made a mid-credit cameo in Sonic the Hedgehog. Fowler similarly showed an interest in working on a sequel to Sonic the Hedgehog that focused on Sonic and Tails' relationship and the development of Dr. Robotnik. Later in April 2020, Ben Schwartz revealed in an interview that he felt that it made sense for Paramount Pictures not to announce a sequel by that point due to the ongoing COVID-19 pandemic. However, he also mentioned that he was interested in a sequel to Sonic the Hedgehog that would feature Tails and a Robotnik that was more in line with his video game portrayals. However, if it were to arise, he was interested in playing a part in it.
Towards the end of April 2020, Patrick Casey, one of the co-writers for Sonic the Hedgehog, revealed that there had been discussions about a sequel to Sonic the Hedgehog, although Paramount Pictures had yet to green-light it at the time. Casey also mentioned that Carrey was interested in wearing a fat suit in the potential sequel to make his appearance more similar to Dr. Eggman's. It was also hinted by Casey that a sequel could feature Super Sonic and the Chaos Emeralds from the Sonic the Hedgehog video games. Casey hinted as well that the sequel could explore a potential connection between Knuckles the Echidna, a supporting character from the Sonic the Hedgehog video games, and the echidna tribe that appeared in the opening sequence for Sonic the Hedgehog.
On 28 May 2020, the sequel was officially announced to be in development by Paramount Pictures and Sega on an online Twitter post, with Fowler returning to serve as director, Neal Moritz, Toru Nakahara and Tim Miller serving as producers, and Patrick Casey and Josh Miller, who wrote Sonic the Hedgehog, serving as writers. In addition, Tim Miller, Hajime Satomi, and Haruki Satomi return to serve as executive producers and Neal Mortiz, Toby Ascher, and Toru Nakahara serve as producers, having co-produced the previous film alongside Takeshi Ito. Production was expected to start in March 2021 under the codename "Emerald Hill", a reference to the first Zone in Sonic the Hedgehog 2. Later, on 8 December 2020, Tyson Hesse, an artist who previously contributed to Sonic the Hedgehog by helping redesign Sonic during the production of the film, would return to work on the Sonic the Hedgehog sequel in the same field as art director and storyboard artist. Joining him were also storyboard artist Fill Marc, whose first live-action project would be this film. Marc's exact words were: "I wrapped up work on Lower Decks Season 2 last week. Excited 2 announce I’ve been working on the Sonic the Hedgehog 2 Story Team with Jeff Fowler and Tyson Hesse at Blur Studio. My first live action feature coming in 2022".
From the beginning, Sonic the Hedgehog 2 was meant to built upon the foundation established in Sonic the Hedgehog. According to Fowler, the first movie was purposefully written and shot as a sparse introduction to Sonic's larger world, with its purpose being to introduce Sonic on his own, establish him as a character, and establish the pre-Eggman version of Dr. Robotnik. With Sonic the Hedgehog 2, the crew was able to open the world of Sonic and tell a much bigger story. Fowler also added that with Knuckles' inclusion in the film, the crew was obligated to make use of the Master Emerald in the story as well, with Fowler describing the two as a "package deal".
On 10 February 2021, the official title for the sequel was revealed to be Sonic the Hedgehog 2 by Paramount Pictures on YouTube. Douglas Einar Olsen was also announced to be part of the Sonic the Hedgehog 2 storyboard team during the title announcement.
In March 2021, it was reported that Moving Picture Company, who is known for working with Blur Studio on Sonic the Hedgehog, would provide VFX for Sonic the Hedgehog 2. During May 2021, the synopsis for the story of Sonic the Hedgehog 2 was released as Paramount submitted a patent to the U.S. Copyright Office catalog. Later, on 5 April 2021, Pat Casey and Tim Miller starred as guests on the Kellen's Petty Talk Show podcast, where they announced that the film trailer would be "so crazy it would shake the internet" and that Paramount Pictures had given them full artistic freedom when writing the screenplay due to the unexpected financial success of the previous film.
As a part of the post-production, the visual effects and animation for the film would be provided by Moving Picture Company, after previously working on Sonic the Hedgehog. Later, on 10 August 2021, it was announced that John Whittington would serve as co-screenwriter.
In January 2021, Tika Sumpter announced that she would reprise her role as Maddie Wachowski for the film. Later in March 2021, it was revealed that Ben Schwartz, Jim Carrey and James Marsden would be reprising their respective roles as Sonic, Dr. Robotnik and Tom Wachowski. During the same month, Adam Pally was confirmed to reprise his role as Wade Whipple.
In January 2021, the crew also held auditions for Knuckles. Also, production is searching for an A-List human cameo to make an appearance in the film. Names like Samuel L. Jackson and Chris Rock were thrown around, however the big name cameo is still up in the air at this time. In early February 2021, The Iluminerdi reported that Jason Momoa had been offered the role of Knuckles. On 16 June 2021, it was announced that Shemar Moore had the film for an undisclosed role.
In August 2021, Idris Elba announced that he will be voicing Knuckles in the film. Soon after, on 29 September 2021, it was announced that Lee Majdoub would reprise his role as Agent Stone for Sonic the Hedgehog 2 as well. On 7 December 2021, Colleen O'Shaughnessey confirmed that she would reprise her role as Tails following the first film. It was later announced on 23 January 2022 that Tom Butler would return to reprise his role as Commander Walters.
During December 2020, it was reported that the BC Film Commission had listed that the production of Sonic the Hedgehog 2 would take place between 15 March 2021-10 May 2021. In January 2021, Tika Sumpter revealed that the film would shoot in both Vancouver and Hawaii.
Principal photography for Sonic the Hedgehog 2 was done primarily in Vancouver and Hawaii, with production beginning in the former on 15 March 2021 and with Brandon Trost serving as cinematographer. Meanwhile, director Jeff Fowler confirmed via Twitter on 15 March 2021 that filming for the movie had begun. In an attempt to show his gratitude to the crew for the film, Jim Carrey held a raffle on 7 May 2021 so he could give away a Chevrolet Blazer. Eventually, the car was given to a grip.
The first teaser for the film was given a remix of Emerald Hill Zone's music, the iconic first Zone of Sonic the Hedgehog 2. Masato Nakamura, the composer for the first two main Sonic the Hedgehog games, expressed excitement for his song appearing in the film: "When I composed the music for "Sonic the Hedgehog 1&2", I tried to write a soundtrack for a movie. I imagined the game like a movie. 30 years later, my music for the game becomes a part of the movie soundtrack of "Sonic the Hedgehog". Literally, it's a dream come true."
Later, on 8 December 2021, Tom Holkenborg, the composer of Sonic the Hedgehog, was announced to return as the composer for the score of Sonic the Hedgehog 2. The debut trailer presented at The Game Awards uses a customised version of "Age Of Heroes" by Really Slow Motion & Giant Apes, once again incorporating the music from Emerald Hill Zone. The final, customised trailer music was composed and produced by Caleb Swift.
On 12 March 2022, Stéphane Legar announced on Instagram that "Speed Life", his new single, which came out on 18 March 2022, would be a exclusive song for the French version of Sonic the Hedgehog 2. On 23 March 2022, Kid Cudi announced that he had a single for the movie titled "Stars in the Sky" for the promotion of the film.
The soundtrack, Sonic the Hedgehog 2 (Music from the Motion Picture), was released digitally on 8 April 2022, the same day as the film in the United States. It was later released on CD on 12 April 2022.
Sega of America confirmed on 17 February 2021 that it would continue their partnership with Jakks Pacific on making merchandise to coincide with the release of the film, including action figures, playsets, plush toys and other collectibles. The costume division of Jakks, Disguise, would also be making costumes and accessories.
The first theatrical poster was released to theaters on 8 December 2021, with the trailer debuting during The Game Awards 2021 the next day. The trailer was met with positive reaction from fans. Elba's voice acting for Knuckles in particular drew in notable praise. Several reviewers would as well note how positive the reaction to the trailer was in comparison to the first trailer for Sonic the Hedgehog that was released on 3 April 2019.
On 23 December 2021, the Sonic the Hedgehog 2: The Official Movie Pre-Quill one-shot comic book was announced. This comic book serves as a prequel to the movie and will feature Sonic adjusting to his new life in Green Hills as boredom starts to set in. The comic also stars Agent Stone, Knuckles, Tails, and Dr. Robotnik in their own stories.
Nickelodeon, a fellow Paramount Global subsidiary, also promoted the movie during the network's special broadcast of the NFL Wild Card game between the San Francisco 49ers and the Dallas Cowboys on 16 January 2022. Sonic, in his movie style, made several appearances during the telecast, including a shot of him and Tails glancing to the camera on the stands before cutting to a commercial break. Later, four television spots for the film, which would feature never-before-seen footage and the reveal of the Death Egg Robot, was released online by Paramount a week before the Super Bowl. Additionally, a special TV spot would air on 13 February 2022, during Super Bowl LVI.
On 22 March 2022, Xbox Wire announced that Xbox and Paramount had teamed up to celebrate the release of Sonic the Hedgehog 2 by releasing a limited time only, custom Xbox Series S console and Xbox Wireless Controllers through two enter–to-win sweepstakes, inspired by Sonic and Knuckles. This customized black Xbox Series S console features a golden Ring shining on its surface alongside an embossed Sonic the Hedgehog 2 logo. Also, with textured coatings reminiscent of the "bristly" texture of wild hedgehogs, the Xbox Wireless Controllers come in the colors blue and red. Participants, who had to be of age 18 or above, could enter two sweepstakes for a chance to win the exclusive custom Xbox Series S and both customized Xbox Wireless Controllers by either retweeting the official Xbox sweepstakes tweet and including the hashtag "#XboxSonic2Sweepstakes" on Twitter, or for fans in the United States, by redeeming Microsoft Rewards points. The contest began on 22 March 2022 and ended on 4 April 2022.
On 24 March 2022, it was announced that the Build-A-Bear Workshop retailer would begin releasing Sonic and Tails bears along with Sonic-themed clothing and accessories from their website in the United States, and later in the United Kingdom, with Knuckles listed as an online exclusive coming soon. The full line includes the three plush characters, Sonic's shoes (sold separately from the Sonic plush), a Ring, Sonic pajamas, a Sonic and Tails tee, and separate Sonic and Tails sound boxes.
Like the first film, the film received promotions in Sonic Forces: Speed Battle and Sonic Dash, both of which added Tails and Knuckles as new characters and added new tracks based on a location from the film.
Sonic the Hedgehog 2 received a theatrical release by Paramount Pictures in France, the Netherlands, and the Philippines on 30 March 2022. followed by Australia on 31 March 2022, It received a public release on 1 April 2022 in the United Kingdom and on 8 April 2022 in the United States. It was later confirmed by Paramount Pictures that both Sonic the Hedgehog and Sonic the Hedgehog 2 would be released on Paramount+ with the latter being added after its theatrical release.
In Japan, the film is set to be released on 19 August 2022 with the original name Sonic the Movie / Sonic VS Knuckles (ソニック・ザ・ムービー/ソニック VS ナックルズ Sonikku za Mūbī / Sonikku VS Nakkuruzu?). Due to the Russian invasion of Ukraine, Paramount has halted the film's theatrical release in Russia.
As of 2 May 2022, Sonic the Hedgehog 2 has grossed $178 million in the United States and Canada, and $187.2 million in other countries the world over, giving a total of $365.2 million worldwide.
In the United States and Canada, Sonic the Hedgehog 2 was released alongside Ambulance and the wide expansion of Everything Everywhere All at Once. It was projected to gross at least $55 million from 4,232 theaters in its opening weekend. The release of the film, whose target audience is people between the ages of 16 and 25, coincided with the start of spring break in 15% of K–12 schools. The film earned itself $26.8 million on its first day, including $6.25 million from Thursday night previews, doubling that of the original movie.
Sonic the Hedgehog 2 eventually grossed $72.1 million over its three-day opening weekend, surpassing the three-day opening ($58 million) of Sonic the Hedgehog and Bruce Almighty ($68 million) to become Jim Carrey's highest three-day domestic opening and Paramount Pictures' biggest three-day opening since 2014. Six million tickets were sold in the U.S. and Canada during its opening weekend. It broke the opening record for a video game movie adaptation, which was previously held by Sonic the Hedgehog. Among opening audiences, males made up 61%, those aged between 18 and 34 comprised 46% of ticket sales and those below 17 comprised 32%, and the ethnic breakdown was 38% were Hispanic/Latino American, 29% Caucasian, 20% African American, and 13% Asian or other. The film also had the best pandemic-era opening for a kids' movie, the all-time seventh best April opening, the second best opening of early 2022, and the fifth best opening since 2020. In its second weekend, the film made $29.3 million, finishing second behind Fantastic Beasts: The Secrets of Dumbledore. Sonic the Hedgehog 2 later returned to the top of the box office on Easter Monday with $4.5 million. In its third weekend the film made $15.7 million, finishing in second newcomer The Bad Guys. Eventually, Sonic the Hedgehog 2 would surpass the original Sonic the Hedgehog to become the highest-grossing video game film in North America. The film remained in second place in its fourth weekend with the addition of $11.5 million. It earned $6 million in its fifth weekend and $4.7 million in its sixth, leaving it to move to third place.
In international regions outside North America, Sonic the Hedgehog 2 opened in 31 markets and grossed $26.1 million in its first weekend, outpacing the original film in these markets. In France, the film made $1.2 million on its first day of screening, reaching the top spot in the charts and surpassing the first film's opening day gross by 30%. In the United Kingdom, it debuted at number one in its first weekend and later retook the top spot from Fantastic Beasts: The Secrets of Dumbledore in its fourth weekend with £20.2 million in four weeks. The film grossed $37 million in its second international weekend. then added $25 million in its third weekend, and another $19 million in its fourth. The film crossed the $300 million worldwide mark in its fifth weekend. It made $8.2 million the following weekend, and $5.3 million in its seventh weekend.
The review aggregator Rotten Tomatoes has reported an approval rating of 68% based on 156 reviews, with an average rating of 5.9/10. The site's critical consensus reads, "It isn't as much fun as the little blue guy's greatest games, but if you enjoyed the first film, Sonic the Hedgehog 2 serves as a generally acceptable sequel." Metacritic would give the film a weighted average score of 47% based on 33 critics, which would indicate "mixed or average reviews". Audiences polled by CinemaScore gave the film an average grade of "A" on an A+ to F scale (same as the first), while those at PostTrak gave it an 87% positive score, with 74% saying they would definitely recommend it.
Amy Nicholson of The New York Times gave the film a positive review, saying, "Jim Carrey's reprised role as a villainous weirdo helps this fast-paced, family-friendly video-game-movie sequel maintain a refreshing silliness." Nell Minow of Rogerebert.com gave the film a two out of fours stars, writing, "Yes, we know we're appropriating details from better movies. It is over-plotted, with three different storylines mixing comedy and adventure." Alex Stednan of IGN gave the film a seven 7.0/10, saying, "Sonic the Hedgehog 2 brings all the humor and charm of its predecessor, while also being delightfully more loyal to its source material." Carlos Aguilar of The Wrap also gave the film a positive review, writing, "The screenplay reflects actual effort, and Jim Carrey gets to be unfettered in his performance, leading a surprisingly satisfying follow-up." Leslie Felperin of The Guardian gave the film a three out of five stars and wrote, "There's not much to spoil about Sonic the Hedgehog 2 because there’s not very much to say about it, other than it's mildly amusing and reasonably competently assembled."
John Nugent of Empire Magazine gave the film a two out of five stars, writing, "Sonic's second outing is little more than a half-baked half-term distraction tool — though Jim Carrey's outrageously committed performance nearly saves the day." Brian Lloyd of Entertainment.ie gave the film a three out of five stars and said, "Idris Elba as Knuckles is the most galaxy-brain casting idea ever conceived of." Bob Hoose of Plugged In gave the film a positive review, saying, "In short, Sonic the Hedgehog 2 doesn’t necessarily grab the gold ring right out the first loop-de-loop, but it won't disappoint the kids or their "fanboy" parents by the time you hit the flag-waving goal." Thomas Floyd of The Washington Post gave the film a two out of four stars and wrote, "In Sonic the Hedgehog 2, there is no problem that its titular speed demon can't outrun. With that in mind, it's especially perplexing that this video game-inspired sequel should be, of all things, a bit sluggish."
On 15 February 2022 at the Investors Connect day, it was announced that a sequel to Sonic the Hedgehog 2, titled Sonic the Hedgehog 3, alongside a spin-off series titled Sonic the Series, are currently in development by Paramount Pictures and Sega. The Sonic the Series spin-off in particular will feature Idris Elba reprising his role as Knuckles, and is to release on Paramount+ in 2023.
In April 2022, after Carrey announced that he was considering retiring from acting, producers Moritz and Ascher confirmed that his role as Dr. Robotnik would not be recast in any sequels if he followed through with his retirement plans. However, they remained hopeful that they could develop a script good enough for him to continue the role.
- This film marks the second time since Sonic Adventure in which Sonic is not voiced by Jun'ichi Kanemaru in Japanese (excluding Sonic the Werehog in Sonic Unleashed).
- This film marks the first time since Sonic Adventure in which Knuckles is not voiced by Nobutoshi Canna in Japanese.
- The "Choice is Yours" poster, featuring Knuckles and Sonic's quills is a reference to a similar poster from 2021 for The Matrix Resurrections.
- The "Blue Justice" promo, featuring Sonic and his signal is a reference to the Batman, like in the film, Sonic called himself "Blue Justice".
- The third advertised poster is a direct recreation of the North American/European box artwork for Sonic the Hedgehog 2.
- On Twitter, FightingGenerations commented on the movie poster by saying it was also inspired by the cover of Tekken 6. It gained notoriety after the director and chief producer of the Tekken franchise, Katsuhiro Harada commented saying it was true.
- Sonic the Hedgehog 2 and its trailers contain the following Easter eggs and references:
- The first trailer showing footage of the film uses a slowed down version of the Emerald Hill theme in cinematic orchestra fashion. The theme can be properly heard by playing the trailer at twice its normal speed around 1:30.
- The three alien scavengers who appear in the beginning of the film wear bird masks in the colors green, purple and gray. Artist Tyson Hesse confirmed that they were based on Jet, Wave and Storm, all of whom are members of the Babylon Rogues.
- Dr. Robotnik's personal decal in the film is based on the Eggman Empire's decal from the Sonic the Hedgehog series. It first appears on a stone on the Mushroom Planet, and later in Stone's secret base.
- Dr. Robotnik greets one of the alien scavengers with the phrase "Klatuu Barata Nikto," which is from the 1951 sci-fi film, The Day the Earth Stood Still.
- Sonic witnessing a police chase and deciding to join in after leaping off of a building and into action may be a reference to the opening for his game counterpart's story in Sonic Adventure.
- Sonic's dummy of himself that he made to fool Tom resembles the popular internet meme, Sanic.
- A reference to "Sanic" also appeared in the the "Fastest Trailer" trailer for this film.
- When Tom is criticizing Sonic for wrecking a city block in Seattle, and Sonic replying that the block was already messed up, this may be a nod to a scene from the 1998 action-comedy film, Rush Hour.
- The skateboard that Sonic can be seen rides around on in the Wachowski house is based on the one in an artwork for promoting Sonic Adventure.
- The yellow backpack Tails wears is possibly based on a similar yellow backpack that his SatAM counterpart wore in the Sonic the Hedgehog television series episode, "Drood Henge".
- To describe the movie Snow Dogs, Sonic sings "That movie is the worst." This is a reference to the episode "Bailout" from the NBC television series, Parks and Recreation where the character Jean-Ralphio Saperstein (also played by Ben Schwartz) sings "She's the worst" to describe his sister.
- Wade makes a reference to the Stay Puff Marshmallow Man, one of the forms of Gozer and the main antagonist of the 1984 film Ghostbusters, when he compared it to Master Emerald’s power to turn thoughts into reality
- Wade would refer it again when he sees Robotnik use the Master Emerald to create the Giant Eggman Robot
- The truck that Knuckles busts through features a sticker on its side which brands it as belonging to a company named "Splash Hills". This is a reference to Splash Hill Zone from Sonic the Hedgehog 4: Episode I.
- The coffee shop where Agent Stone works is called the "Mean Bean Coffee Café", which is a reference to Dr. Robotnik's Mean Bean Machine.
- It could also be a reference to an early script of the original Sonic the Hedgehog film where Dr. Robotnik owned a coffee machine called the "Mean Bean Machine".
- Agent Stone referring to Knuckles as a "space porcupine" is possibly a reference to the Sonic Adventure version of "Unknown from M.E.", which also incorrectly refers to Knuckles as a porcupine.
- When Sonic and Tails' disguises are pulled off of them in the Siberian bar, Sonic says "Uh, meow?" This harkens back to the first film, as this is the line that Sonic exclaims when he is discovered by Tom in his garage.
- In Sonic and Tails' dance battle scene in Siberia, Sonic jumps into the air and pulls off a pose that is based on a promotional artwork for his video game counterpart made for Sonic Adventure. This was an idea conceived by Tyson Hesse.
- Tails' backstory of how everyone in his village thought he was weird for his two tails and being inspired by Sonic for simply being himself is in reference to the story of the Sonic the Hedgehog 2 video game described in its Japanese instruction booklet.
- According to Tyson Hesse, the symbols on the tiles under the owl statue in the Siberian temple were modeled after the writing of the Babylonians, namely as a reference to 'Sonic Riders: Zero Gravity'.
- Sonic and Knuckles using the broken panels of Badnik drones as snowboards is possibly a reference to the beginning of the Sonic Adventure 2 Hero Story, where Sonic tears off a wing panel of the Sigma-Alpha 2 helicopter and uses it as a snowboard during City Escape. It can also be seen as a reference to Sonic the Hedgehog 3, where Sonic uses a Snowboard to travel down a mountain during the beginning of IceCap Zone Act 1.
- Tom's ringtone for his phone that is heard during Rachel's wedding on Hawaii is the background music for Green Hill Zone Act 1 in the original Sonic the Hedgehog.
- Before running across the ocean, Sonic braces himself against the ground, and says "Gotta go fast" while a close-up shot of his face is seen. This is both a reference to the theme song of the same name from the American version of Sonic X, and the infamous original trailer for the first Sonic the Hedgehog film in April 2019, where Sonic performs a similar pose before saying the same line.
- Various gameplay elements from the Sonic the Hedgehog series appear in Labyrinth, such as spears, spikes, water slides, and a rolling iron ball similar to those in Marble Garden Zone. There is also a relief of an owl spitting fire, which is modeled after the stone Gargoyles and owl murals from the original Labyrinth Zone.
- Robotnik attempting to electrocute Knuckles and betray him may be a reference to the events in Hidden Palace Zone in Sonic's story in Sonic & Knuckles.
- During their battle in the Labyrinth, Sonic dodging Knuckles' rapid punches may be a homage to the episode "Cracking Knuckles" from Sonic X anime series.
- When absorbing the Master Emerald, Robotnik shouts "Chaos... is... power!". This is an incomplete reciting of Tikal's Prayer that debuted in Sonic Adventure.
- While underwater trying to rescue Knuckles, Sonic sucks up an air bubble to prevent himself from drowning. This is in reference to the recurring gimmick of Air Bubbles in the Sonic series.
- After freeing Knuckles from under the pillar in the sinking Labyrinth, Sonic starts to drown. As this is happening, the song "You Don't Have to Be Alone Anymore" plays. This song samples the drowning theme from the original Sonic the Hedgehog.
- In the scene where Agent Stone looks at various costumes for Robotnik, one can see an ensemble based on the original classic clothes that Robotnik's game counterpart first wore in the original Sonic the Hedgehog.
- The helicopter that Tom, Maddie, and Commander Walters arrive in Green Hills in is labeled "SA-2". This is in reference to the abbreviation of Sonic Adventure 2 (the debut game of Guardian Units of Nations), as well as the group Sigma-Alpha 2, who were the ones who captured Sonic and took him in their helicopter during the events of said game.
- The instruction manual that Agent Stone reads for the Giant Eggman Robot is designed after the manuals included with the North American versions of the Sega Mega Drive games.
- The Giant Eggman Robot's 'Stache Smasher' attack is a possible reference to the 'Stache Smash video game Eggman made in the Sonic Boom episode, "Eggman: The Video Game Part 1".
- Sonic returning a missile back to the Giant Eggman Robot by riding on it may reference Sonic the Hedgehog: The Movie, where Sonic similarly redirects a missile back towards Metal Robotnik after the latter has fired it.
- During the battle in Green Hills, Knuckles throwing Sonic in his ball form at a Badnik may be a reference to the Fire Dunk, a move from Sonic Heroes.
- During the battle in Green Hills, Knuckles performs a corkscrew maneuver which closely resembles Screwdriver, a move that debuted in Sonic the Hedgehog (2006).
- In the scene where Sonic taunts Robotnik, he asks the doctor if he will build himself a robot wife. This may be a reference to the Adventures of Sonic the Hedgehog television series where Dr. Ivo Robotnik has built two robot wives for himself in the episodes "Sonic the Matchmaker" and "Sonic is Running".
- The sequence of events where the Giant Eggman Robot attempts to crush Sonic with its foot, only for the hedgehog to transform into Super Sonic and catch it is very similar to Super Sonic's defeat of the Egg Destroyer Battlesuit in Sonic the Hedgehog #229, "Genesis Part Four: Reset".
- Super Sonic effortlessly catching the Giant Eggman Robot's fist with one hand is a possible reference to Super Sonic catching the E-99 Eggsterminator's fist with one hand in the episode "Countdown to Chaos" from the Sonic X anime series.
- The way in which Super Sonic delivers the final "blow" to the Giant Eggman Robot, namely by softly kicking it over with his toe tip, may be a reference to the action gag in the opening scene of the Sonic Episode in Sonic the Hedgehog (2006), where Sonic makes quick work of an Egg Gunner into a frozen upright state before tapping it off the edge with the tip of his foot.
- After the final battle, Knuckles warns that Sonic may have lost his sense of self after absorbing the Chaos Emeralds. This may be a nod to the Sonic the Comic comic series and its spin-offs published by Fleetway Editions where Super Sonic is portrayed as a psychopathic and murderous entity.
- Sonic, Tails, Knuckles, Tom, and Maddie playing baseball together is a callback to the first Sonic the Hedgehog film, in which Sonic played baseball by himself.
- In the baseball field scene, when Sonic gets fed up with explaining the game to Knuckles, he says "I can't with this guy." This is something he said to himself when he pretended to be an aloof baseball player in the first film.
- In the baseball field scene, Knuckles using his fist instead of the bat to hit a baseball. This is similar to what he did in the episode "Unfair Ball" from the Sonic X anime series.
- During the credits sequence, one of Super Sonic's poses is based on his unused sprite found in the game data of Knuckles' Chaotix.
- The released GIF of Sonic tapping his foot with the sentence "I'm Waiting" behind him is a reference to his Adventures of Sonic the Hedgehog counterpart's catchphrase and his original Sonic the Hedgehog idle animation.
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