Rings are objects that appear in the Sonic the Hedgehog film series produced by Paramount Pictures and its spin-offs. They are special handheld portals that are used by all advanced cultures to travel between worlds.
The Rings' design is based on either the basic and round-edged wedding rings or solid brass round rings. In their base state, Rings are small to fit into the palm of the hand. When active however, they can grow to be a number of meters in diameter.
Powers and traits
Rings can create portals that can reach practically anywhere in the universe that the user can imagine, from several dozen meters away from their origin point to planets on the far side of the universe. However, it is implied that there is a limit to their warpable range. They are seemingly able to interface with their wielder's mind, allowing them to be controlled by thought.
To utilize a Ring, the user must either throw or drop a Ring with the intention of using it while thinking of the place they want the other end of the Ring to appear. The user does not even need to have any prior knowledge of the place they want to go to with a Ring, as long as they can picture it in their mind. Conversely, if its wielder has no intention of using it, a Ring will not activate, meaning that accidently dropping a Ring will not activate it. Furthermore, they cannot be used to track a person; Tom could for example not open a Ring to Sonic's whereabouts in Siberia without being able to picture where Sonic was. After moving an appropriate distance following the user's release of it, the Ring will position itself vertically, although it can also set itself up horizontally when lying on the ground, and expand significantly. The size the Ring will assume seems to depend on the user's preference. However, should the Ring collide with something before it positions itself following the user's release of it, it will not activate.
Once in position, the Ring will open a portal inside its inner rim that leads to the wielder's desired location. Also, once used, the Ring that made the portal will either shrink away until it ceases to exist or simply fade away. The stability and duration of the transition through Rings vary. However, a Ring usually closes up after someone or something, be they either a singular entity or multiple ones, have passed through it.
Ten years ago, when Sonic was in danger of being kidnapped by Pachacamac's tribe, Longclaw gave him her bag of Rings and used one to open a portal to Earth, which Sonic could hide out on, and instructed him to safeguard her Rings, which he must use to escape Earth if he was ever discovered. After getting through the Ring portal however, Sonic tried to get back through it when he saw Longclaw was in danger, only for it to close in front of him.
Sonic the Hedgehog
When he was about to be discovered by the United States Army, Sonic took his Rings to Tom Wachowski's garage in an attempt to leave Earth for the Mushroom Planet in peace. However, when Tom found him and tranquilized him, Sonic spotted the Transamerica Pyramid in San Francisco on Tom's shirt, leaving him to open a Ring portal to the top of said building as he passed out and accidentally drop his Ring bag into the portal, which closed before he could get through it.
Days later, Sonic, Tom and Maddie Wachowski found Sonic's Rings on the Transamerica Pyramid's top deck. Sonic then tried using a Ring, but it got intercepted by the arrival of Dr. Robotnik in the Eggpod. During his subsequent attempt to get Tom and Maddie away from Robotnik's attack on them, Sonic dropped his Rings when Robotnik took shots at him. Fortunately, Sonic recovered one in time to sent Tom and Maddie to Green Hills before they could get killed. Regathering his Rings after that, Sonic began using them to travel between countries in an attempt to escape Robotnik, only for the doctor to keep up with him in the Eggpod and follow him through the Ring portals. Upon arriving in Green Hills, Sonic dropped his bag of Rings. Retrieving the bag, Tom used a Ring to ambush Robotnik from behind. Soon after, as Sonic stood to land his final hit on Robotnik's Eggpod, Tom used a Ring to open a portal to the Mushroom Planet, which Sonic knocked Robotnik and his trashed Eggpod into before it closed.
Later, Tails used a Ring to go to Earth, having tracked Sonic there.
Sonic the Hedgehog 2
Following a chaos energy signal, Knuckles and some alien scavengers used a Ring to go to the Mushroom Planet, where they found Dr. Robotnik. Not long after, Sonic provided Tom and Maddie with a Ring portal to Hawaii, while also giving Tom a spare Ring to return home with. As Sonic began partying by himself, he would use a Ring to make a purchase in a supermarket from the Wachowski house. In the meantime, Tails arrived near Green Hills through a Ring during his search for Sonic. As night then fell, Robotnik and Knuckles arrived at the Wachowski house through a Ring. Not long after, Sonic and Tails used one of Sonic's Rings to go to eastern Siberia on their hunt foe the Master Emerald. In the meantime, Tom got Rachel's wedding ring mixed up with Sonic's Ring while playing a magic trick on Jojo.
During his clash with Knuckles in Siberia, Sonic lost all his Rings over a cliff. As such, when he had to escape an avalanche with an unconscious Tails, Sonic called Tom to have him use his Ring to create an escape route for him. However, upon noticing that he got the Ring mixed up with Rachel's, Tom intruded on Rachel and Randall's wedding ceremony and took the Ring from Randall by force, which he then used to open a portal to Siberia for Sonic, allowing him and Tails to escape the avalanche. Soon after, Robotnik and Knuckles used a Ring to reach an island in the Pacific Ocean where they could find the Master Emerald. Some time after, Sonic, Tails, and Knuckles used a Ring to reach Green Hills in the Tornado.
Sonic the Hedgehog: The Adventures of Sonic & Donut Lord
When Longclaw helped Sonic escape to Earth, she gave him her bag of Rings, which would let him travel anywhere he could imagine, and instructed him to use them to escape Earth if he was ever discovered.
When a United States government truck began tracking him, Sonic took his Rings with him to Tom Wachowski's garage, hoping to escape to the Mushroom Planet with one from there. However, Sonic fled into the woods with his Rings when Dr. Robotnik's Badniks discovered him. There, Sonic used a Ring to take a look at San Francisco, only to accidently drop his bag of remaining Rings into the Ring portal to San Francisco, which closed up before he could get through it.
Days later, Sonic, Tom and Maddie found Sonic's Rings on top of the Transamerica Pyramid. When Robotnik appeared in his Eggpod and attacked them however, Sonic used two Rings: one to send Tom and Maddie to Green Hills and another for him to escape through. However, Robotnik would follow Sonic through his portal. Sonic proceeded to use his Rings to travel between countries in an attempt to escape Robotnik, only for the doctor to keep up with him in the Eggpod and follow him through the Ring portals, until they ended up in Green Hills.
Sonic the Hedgehog 2: The Official Movie Pre-Quill
Using a Ring, Knuckles would travel to a volcanic planet. After he got injured there however, some scavengers appeared on the scene with a Ring and used it to bring Knuckles to a gladiatorial fight in the Casino Night. After winning the fight, Knuckles was rewarded with a bag of Rings which he used to persuade the scavengers to help him look for Sonic. Meanwhile, Tails would use a Ring to reach Green Hill Zone during his search for Sonic. After getting what he needed to narrow down Sonic's whereabouts, Tails began his search by first using a Ring to go to Marble Zone. When he noticed that someone was following him and possibly piggybacking on his Ring portals, Tails began using Rings in rapid success in hopes of shaking off his pursuer. After using his Rings to go to Spring Yard Zone, Aquatic Ruin Zone and lastly Hill Top Zone, Tails pinpointed a chaos energy signature on Earth. As Tails left for there through with a Ring, another Ring portal appeared next to it, through which the scavengers working with Knuckles emerged.