Metal Sonic

"Long time no see, Sonic, my loathsome copy!"

- Metal Sonic


 * This article is about the character in general, for other uses, see Metal Sonic (disambiguation).

Metal Sonic (メタルソニック) is the evil robotic counterpart of Sonic the Hedgehog, created by Dr. Ivo "Eggman" Robotnik. As well as resembling Sonic, he can also perform many of Sonic's moves, including his homing attack. Metal Sonic is always on the dark side throughout the series, with Sonic Rivals 2 being the only game where he takes a protagonistic role as a playable character. He's noteworthy for being the second most recurring villain in the series, only below Dr. Eggman himself.

Becoming a Popular Villain
Metal Sonic's first appearance was in Sonic CD for the Sega CD console. In this game, he is under the control of Dr. Robotnik and is sent back in time to change the past so that Dr. Eggman can rule the future. Later, he kidnaps Amy Rose, who had been following Sonic. In the Stardust Speedway Zone, he challenges Sonic to a race rather than a traditional boss battle, with Eggman on their trail and chasing Sonic with a death laser. Periodically, he uses one of two moves - if Sonic is ahead of him, he will explosively accelerate with the V. Max Overdrive Attack, which will make him go four times as fast temporarily and attempt to blast through Sonic. If Sonic is behind him, he'll instead use the Ring Spark Field (Black Shield), which is an electric attack that has a wider range but requires him to decelerate.

If Sonic does not reach the goal in time, the door will close as Eggman kills Sonic with the death laser, and the robotic duplicate looks on and mockingly mimics Sonic's smug finger wave. If Sonic succeeds, the door will close in front of Metal Sonic, causing him to crash with a damaged ring in his stomach, broken eyes and mouth. Eggman retreats, allowing Sonic to finally rescue Amy and proceed to the last zone. In the Japanese manual, it was claimed that he had all the abilities of the original Sonic and more, but in-game he does not demonstrate this.

Last Resort
Metal Sonic appears as a surprise boss Sonic or Tails must face in Sonic Triple Trouble. Unlike Sonic CD, it is not a race; it is an actual battle, though Metal Sonic uses his flight and evasion to attack. After being defeated, he wanders off and isn't seen for the rest of the game.

Destroying a Zone
Metal Sonic's next major appearance was in Knuckles' Chaotix, where Eggman attempts to absorb the Chaos Rings' powers to wreak havoc in the Newtrogic High Zone. Once again, he has an unorthodox boss battle in which the goal is to stop his machine so it lands on a "damage" mark. After being defeated by the Chaotix, he is seen leaving with Robotnik. This occasion also featured his first supposed power up; a massive, red version of himself called Metal Sonic Kai appears right afterwards. In the bad ending, this monstrosity destroys the island.

Becoming Cheap
Metal Sonic appears as the penultimate boss character in Sonic the Fighters. In this appearance, he demonstrates not only a powerful laser-type move that emits from the hole in his body, but also borrows certain moves from other playable characters (possibly the first signs of his ability to copy his foes). Another version, called Mecha Sonic Model No. 29 (or "Rocket Metal"), appears in the intro.

Racing Weapon
Metal Sonic is an unlockable, playable character in Sonic R. To unlock him, the player must find the Sonic Tokens in the Resort Island course, finish the race in at least 3rd place, and then beat him in a one-on-one race against him. Here, the chrome copy plays like an alternate version of Sonic, being faster and slightly harder to steer, but is not quite as fast as Super Sonic. Unlike Sonic, he can't double jump, but thanks to his boosters, can run across water for a short time, which the normal Sonic is incapable of doing.

Metal Sonic Adventure
Metal Sonic makes a cameo in Sonic Adventure (or Sonic Adventure DX) , inside a stasis tube in one of Dr. Robotnik's hideouts in Mysic Ruins along with a second model of Mecha Sonic (AKA Silver Sonic) from Sonic the Hedgehog 2.

He then appeared as a gift for getting all of the Emblems in subsequent remakes of Sonic Adventure. One could then play as Metal Sonic in Sonic's stages. Metal Sonic essentially acted as an alternate skin for Sonic; in fact, his playable model is very much made in Sonic's image, and is very different from the Metal Sonic that can be seen in the Mystic Ruins Base.

Into Multiplayer
Metal Sonic's next appearance was as an unlockable multiplayer character in Sonic Adventure 2, and subsequently a standard multiplayer character in the GameCube remake, Sonic Adventure 2: Battle. In the Dreamcast version, he finally demonstrated the ability to act as Sonic, though his moves this time were a carbon copy of Shadow's. Hence, he could perform Chaos Control using ring energy. He would learn a stronger version of this technique in Sonic Heroes. In the GameCube version, each 2P character is made more unique, thus he has his own attributes. For one, he can grind faster than Sonic, Shadow, and Amy. He can also project a Black Shield, which is similar to the Ring Spark Field he had in Sonic CD and can jump at a laughably high altitude. The drawback is that he no longer has any other special attacks of his own, though the Black Shield can protect against the special attacks of his opponents, such as Sonic Wind or Chaos Spear, but it can't protect him from Time Stop and Chaos Control. Metal Sonic cannot maneuver while using the Black Shield, but he does maintain his momentum and can exceed max speed when using it before landing on a dash panel.

Tracking Down 12 Heroes
Metal Sonic has appeared as the true antagonist in Sonic Heroes. After betraying Dr. Eggman and assuming his disguise, he copies the physical data (and/or abilities) of Sonic, Shadow, Froggy and Chocola to assume his ultimate form, Metal Madness, and later Metal Overlord. This not only increased Metal Sonic's power, but gave him shape-shifting abilities and a new look (a cape, elf-like shoes and longer spines on his head), dubbed Neo Metal Sonic. He manages to achieve this through the use of Chocola, since Chao have a connection to Chaos, the water god of destruction from Sonic Adventure, and Froggy, who periodically had Chaos' tail in Sonic Adventure. In his Metal Overlord form, he transforms into a mechanical dragon-like entity, with one eye over the other, strangely. After he is defeated by Team Super Sonic in his Metal Overlord form, he reverts to his original form. Sonic then challenges Metal Sonic to a future rematch and races away. Metal Sonic then passes out cold, he is last seen being lifted off the ground by Omega, who exchanges a glance with Shadow. What they both have in mind for the metallic hedgehog is never told. At some point, Eggman re-obtains him and reprograms him to be obedient. Strangely, Metal Sonic did not appear in the following game, Shadow the Hedgehog, and was not even mentioned in it, despite the game being a direct continuation.

Reprogrammed
Metal Sonic appears seemingly reprogrammed by Eggman Nega to serve him and stop Sonic, Knuckles, Shadow and Silver from stopping him in Sonic Rivals. Metal Sonic is also playable and can be unlocked by either completing story mode with every character, or by collecting the Metal Madness, Metal Overlord, and Neo Metal Sonic cards. Metal Sonic's signature move is called "Copy Cat" where he uses his opponent's signature move. He also defends Eggman Nega's Flagship.

Agent of Eggman
Metal Sonic returns in Sonic Rivals 2, this time he is playable from the start. Reprogrammed and by Dr. Eggman, Metal Sonic appears as a mindless servant, unable to talk (save for various mechanical noises); however, Eggman can talk through Metal via a communicator. Despite not being able to talk, Metal can still hear and follow orders. Metal is sent out by Eggman and teams up with Shadow to stop Eggman Nega from releasing the Ifrit, a destructive monster from an alternate dimension. The cutscenes involving him occasionally glimpse into his thought process, showing he's capable of prioritizing goals. During the game, it is revealed that Eggman placed a Chaos Emerald in Metal Sonic (to hide it from Nega and possibly add extra power to the robot). Eggman Nega also makes his own version of Metal Sonic, Metal Sonic 3.0.

After the teams defeated the Ifrit, everyone escaped through the portal except Shadow, Metal Sonic, Eggman Nega, and presumably Metal Sonic 3.0. However, Shadow and Metal Sonic used the Chaos Emerald inside Metal Sonic to warp out of the Ifrit's dimension with Chaos Control, leaving Eggman Nega trapped inside.

This is the only game where he plays a heroic role. However, this is because he is working for Eggman, who at the time considers Eggman Nega and the Ifrit a bigger threat to him than Sonic, and likely returns to his evil ways when Eggman does.

The Robot Rider
Metal Sonic is a playable character and the mastermind of Story Mode in Sonic Free Riders. He disguised himself as a robot named E-10000B and joined Shadow and Rouge as a Team Dark member tricking them into believing he wanted to help them win the Grand Prix while he actually wanted to copy the other teams' abilities. Eventually, he reveals himself (much to Eggman's surprise, who didn't know Metal Sonic had betrayed him again) and challenges Sonic to a race to prove he is stronger than him. Sonic manages to beat Metal Sonic, who in turn runs away, probably planning up his next scheme since he is now free of Eggman's control.

Destroying Two Sonics
Metal Sonic appears as the first rival boss in Sonic Generations, sporting his classic design.

Classic Sonic finds him in the Hub World as the robot challenges him to a race for the purple Chaos Emerald. The boss fight is very different, as Eggman isn't chasing the two and Metal Sonic destroys the road before the boss fight. They race in Stardust Speedway, just like they did back in Sonic CD. He regains the V. Max Overdrive Attack to gain bursts of speed and the chance to attack his non-mechanical namesake, as well as blasting through the streetlamps on either side of the road for them to land on Sonic. After these attempts, he slows down as he has put too much power into his attacks and short-circuits, needing a moment to recharge, giving Sonic the chance to strike him onto the road. After a certain number of hits, Sonic finishes Metal Sonic off by kicking him at the sky (or a tunnel depending on where you are) with the robotic doppelganger creating a fantastic explosion. Unlike the two other rival bosses who come to root Sonic on when he is facing Time Eater, Classic Metal Sonic does not appear.

For the 3DS version of Sonic Generations, Classic Metal Sonic is the boss battle of Casino Night.

Back on Track
Metal Sonic appears in Sonic the Hedgehog 4: Episode II as a villain. He is fought in Sky Fortress Zone in an airship as well as White Park Zone. Sonic races him once again on the first act of Death Egg mk.II Zone like he did in Stardust Speedway.

On the 5th of April 2012, SEGA posted a new trailer for Sonic the Hedgehog 4: Episode II which reveals that if players have both episodes, they will be able to download "Episode Metal" Content which allows them to play as Metal Sonic in both Episode I and II and also unlock 4 exclusive levels. It ties the events of Sonic the Hedgehog CD and Sonic the Hedgehog 4: Episode I together, showing his revival in greater detail.

It is revealed that after the events of Sonic CD he was left on Little Planet severely damaged for at least one year. Dr. Eggman restored his functionality and sent him to Mad Gear Zone to repair him. He then goes to Lost Labyrinth Zone, and finds a gemstone, what Eggman was looking for. He then heads to Casino Street Zone, but Sonic isn't there. He then heads to Splash Hill Zone, only to find Sonic has already stopped Eggman. He then finds Tails' Rocket and sees Sonic and Tails heading toward Sylvania Castle on the Tornado. He then scares the animals away and chases after them on Tails' Rocket, leading into Episode II.

Metal then confronts Sonic and Tails in the White Park Zone and is defeated. He later confronts them on an airship near the Sky Fortress Zone, but is defeated. He then flees toward the Death Egg mk.II Zone and confronts Sonic and Tails once again as one of the two final bosses. He loses and then races them, but hits a wall, being electrocuted, and falls over the edge. It is unknown what becomes of him, although it is presumed that Eggman eventually restores him for his appearances in Knuckles' Chaotix (whenever it takes place) and Sonic Triple Trouble.

The Racing Robot
Metal Sonic appeared as a playable character in Sonic Drift 2. He is the only newcomer that was around but not included in the original Sonic Drift.

In a Picture
He appears on the box art and the final "Congratulations" image of Sonic Gems Collection. He is also in the games Sonic CD, Sonic R, Sonic Drift 2, Sonic Triple Trouble, and Sonic The Fighters.

Playing Pinball
Metal Sonic appears as an opponent in the Story Mode of Sonic Pinball Party.

As a Sticker
Metal Sonic appears as one of the collectible Stickers in Super Smash Bros. Brawl.

Making Another Cameo
In the Scrap Brain Zone court in Sega Superstars Tennis, Metal Sonic is in the stands on the side watching the match.

Mario & Sonic Olympic Games Series
Metal Sonic is one of 4 new playable characters in the Mario & Sonic's Olympic series. He is a speed type and rivals with another new character, Bowser Jr. In the DS Adventure Tour, he is one of the major antagonists joining Bowser and Eggman's side trying to stop Mario and Sonic from rescuing the Snow Spirits.

Mario & Sonic at the London 2012 Olympic Games
Wii

Metal Sonic reappears as a playable speed type character in Mario & Sonic at the London 2012 Olympic Games.

3DS

Metal Sonic appears in the 3DS version of Mario & Sonic at the 2012 London Olympic Games but unlike previous installments there are teams (5) for events with only 4 to choose from. Metal Sonic's team is called the Tricksters and the others are Dr. Eggman, Wario and Waluigi. In Story Mode he appears helping Dr. Eggman and Bowser who were trying to prevent the Olympics from happening due to the fact that they thought Mario and Sonic were trying to keep them out of the Olympics. In story mode he breaks Waluigi's Waluigiscopes which were acually a pair of bionoculars so he challenges him so he will pay for them (plus a meadling tax). However, when Waluigi wins, Metal Sonic runs off without paying, so Waluigi chases after him (with Luigi and Charmy following them, who were watching them face off). Eventally Waluigi meets up with Wario (who was chasing Dr. Eggman since his fog would prevent him from setting up a store where he could make money) and ask him to help offering money (while adding that to the Waluigiscopes and the meadling tax) and Wario dicides to join him (for his own reasons). Then they meet up with Metal Sonic and Eggman who battled them in an Olympic challenge (with Mario and Luigi watching). After winning they destroy the machine and Mario ask them to keep an eye on them (while he and the others head for the stadium). Eggman escapes later on, but Metal Sonic is not seen.

Return of the Racing Robot
Metal Sonic is the first (and only) official downloadable character in Sonic & SEGA All-Stars Racing His All Star move is "Maximum Overdrive" which deploys two pads that fly in front of him, emitting lightning bolts between them.

After the Defeat...
Metal Sonic makes a silhouette in Sonic the Hedgehog 4: Episode I in the secret ending when getting all 7 Chaos Emeralds and beating the final boss. This is supposed to be a teaser of what's to come in Sonic the Hedgehog 4: Episode II. Metal Sonic was reborn in Sonic the Hedgehog 4: Episode Metal by Dr. Eggman and orders him to go to Mad Gear Zone, get fixed, and set off to Lost Labyrinth Zone to collect something and then get revenge on Sonic. Metal Sonic finds Sonic in Splash Hill Zone flying off on the Tornado with Miles "Tails" Prower and chases them.

Other Sonic Robots

 * Note - Some early material refers to Metal Sonic as Mecha Sonic. This has long since been phased out.

Another robot often confused with Metal Sonic is the Sonic robot from Sonic the Hedgehog 2, called Mecha Sonic in Japan ("Mecha" is a Japanese word meaning "Machine" or "mechanical") and Silver Sonic in the western comics. There have been much confusion about whether the name "Mecha Sonic" really is an official name or not, but it was in fact mentioned in both the original Japanese Sonic the Hedgehog 2 manual and the Japanese version of Sonic Jam. This presumed prototype did not have Metal's painted blue color and was also very clunky compared to the sleeker and generally more Sonic-like Metal Sonic. It is destroyed the first time Sonic fights him.

Later on in Sonic & Knuckles, another Sonic robot appeared and attacked both Sonic and Knuckles. It too was called "Mecha Sonic" in the Japanese version of Sonic Jam, but isn't referred to at all in American manuals. Against Sonic and Tails, it appeared three times in Sky Sanctuary Zone - twice in machines Dr. Eggman had used in Sonic the Hedgehog (Green Hill Zone Act 3) and Sonic the Hedgehog 2 (Metropolis Zone Act 3) and once in a one-on-one fight. Against Knuckles it fought one-on-one, as in the final fight with Sonic and Tails, but in the second phase of the battle he used the Master Emerald to go Super (much like Sonic can go Super and become Super Sonic) for brief periods of time. In the end it is destroyed by Knuckles.

Another robot, unnamed in the game but called Silver Sonic II in the Archie Comics, appeared in a stasis tube in Sonic Adventure.

Whether these "Mecha" Sonics really are different robots, or if they are in fact one and the same that gets rebuilt whenever he is destroyed (like Metal Sonic) is a source of much debate among fans, as there is no official material that states anything about this.

Mecha Sonic returned to his 16-bit Sonic the Hedgehog 2 incarnation in Sonic the Hedgehog Pocket Adventure as the boss of Aerobase Zone. It is almost identical to its 16-bit counterpart except it has the added ability to dash backwards, like it did in Sonic & Knuckles.

In Sonic Rivals 2, Metal Sonic finds himself a new rival: Metal Sonic Version 3.0, Eggman Nega's personal copy of Metal Sonic. Metal Sonic has an unlockable costume based on him called "Mach 3.0". Metal Sonic Version 3.0 looks just like the real Metal Sonic, but is colored black and yellow, similar to Gemerl.

Due to the backstory of Sonic the Hedgehog 4: Episode II, the events of Sonic Triple Trouble, Knuckles' Chaotix, Sonic the Fighters and Sonic R are further put into question as he has remained dormant since Sonic CD. It is possible that Sonic CD took place after those games. It is also possible that the games in question have been stricken from canon, or that the Metal Sonic of those games is a separate one. Though the most likely explanation is that these games take place after Sonic 4.

Personality
Metal Sonic is aggressive, power hungry and very cold-hearted. For a long time he has acted more or less as Dr. Eggman's slave, but after turning against his master in Sonic Heroes it became clear he is actually a very controlling person, who views himself as superior to others and wishes to rule over them. He is also completely obsessed with the idea that he is superior to Sonic in every way, and his ultimate desire above all else is proving to the real Sonic that he is better than him, should it be in fighting or just racing, and eventually defeat Sonic once and for all, since it is for this reason that he was created.

It was this desire to defeat Sonic that eventually drove Metal Sonic to rebel in Sonic Heroes, as he claimed this was the reason that he took Dr. Eggman's position and sought out the data from the others to become Metal Overlord: So that he could finally defeat Sonic. In Sonic Heroes he even goes as far as calling Sonic "my loathsome copy", as well as desperately shouting "I am the real Sonic!" when he is defeated by Team Super Sonic. He also says "Sonic, I was created for the sole purpose of destroying you", near the middle of the fight, raising the question as to how Metal Sonic can both believe himself to be the real Sonic and at the same time acknowledge his existence as a mechanical copy of Sonic. This suggests that Metal Sonic's obsession with the real Sonic, and the belief that he is better than him drove him insane in the process and twisted his rational mind, making him think that since he is supposed to be the superior Sonic, it makes him the real Sonic. It can also be thought, however, that Metal Sonic thinks that even though he was created, he believes he's the real Sonic.

Metal Sonic gained some independence in Sonic Heroes, which led to his rebellion against his creator, but that part of him was removed when Dr. Eggman restored him to his robotic slave after these events. Metal Sonic regained his independence, however, in Sonic Free Riders when he goes inside Team Dark's new robot Power Member E-10000B, without even Dr. Eggman knowing it and stealing the data Eggman intended to get for his own nefarious uses.

Outer Armor
Strength Enhanced Navy Blue Metal Tektite.

Main Computer
Artificial Intelligence ROBOTNIK Custom Chip.

Internal CPU has a conversation system capable of high mathematical logic enactment. At the slightest sign of danger, the neuron connections simultaneously inform each section of the body to correspond. In short, this allows him to react quickly to certain situations.

Sub Computer
The power control system is governed by the Neo Super FX DSP Chip (which has a 5 link system connecting to each section of the body). The TV picture imaging compensation unit is the Next Risk Chip Series 3 Model (each eye has an 8 link system utilizing RGB imaging).

Main Engine
255 cc, 4 Valve Organ Fusion Engine

Maximum Output: 55ps/6800rpm

Maximum Torque: 7.54 kg-m/4000rpm

Secondary Engine
Tesla Power Coil, which produces electricity by means of electromagnetic induction Maximum Output: 256kW

Note: In Sonic Rivals 2, Metal Sonic is discovered to have a Chaos Emerald stored it inside himself, either for use as a secondary power supply, or as a hiding place to keep it from being discovered.

Abilities
Being a robotic clone of Sonic, Metal Sonic has access to many of Sonic's powers and abilities. He can utilize the Spin Dash (albeit a far more deadly circular saw variation) and the Homing Attack, and can also jump higher and farther than Sonic, and match or even exceed his speed; though many games actually depict Metal Sonic as being faster than Sonic, it is countered by poor traction and braking abilities (likely stemming from Metal Sonic's tendency to hover above the ground at high speeds).

He can temporarily achieve 4 times the accelerating speed of Sonic, in his early appearances; it is suggested that at this time his systems are overclocked. When his circuits are overloaded with power, he releases a multitude of blue-white sparks which surround him as he moves; this process is called "V. Maximum Overdrive Attack" and while it is active Metal Sonic can reportedly penetrate any substance. However, the V. Maximum Overdrive attack cannot be sustained for extended periods of time because of its unfavorable cost performance and potential to destroy Metal Sonic himself. In addition, Metal Sonic can also use an area-of-effect attack called Ring Spark Field, but the attack affects his speed as at least some of the power necessary to engage it is rerouted from systems which he depends on for mobility.

In addition to Sonic's abilities, Metal Sonic has numerous capabilities unique to himself. He can fire laser blasts from the aperture in his abdomen, fly via the use of the jet engine in his midsection, stretch his arms and legs to great lengths and strike from a distance, generate powerful electricity from his body, and generate a diamond-shaped force field (dubbed the "Black Shield") to protect himself.

Arguably, his most powerful and impressive ability is that to scan other characters (much like Emerl), copy their life data into himself, and immediately and flawlessly replicate not only their abilities, but also their physical form to look and sound exactly like them (this is how, in Sonic Heroes, he tricked everyone into believing he was Eggman, and also the reason Team Rose believed Sonic to have Froggy and Chocola with him). His acquired abilities and traits are listed below:

Also as of Sonic the Hedgehod 4: Episode Metal it is revealed that Metal Sonic acquired a special item that boosts his powers and gives him access to incredibly powerful abilities. First he can charge himself to augment his strength, this boost is so potent that when successfully charged it releases a shockwave around himself that is quite damaging. When using this power he glows in a dark aura, and the strength and speed of his Spin Dash is increased, his Spin Dash can be so powerful that it can destroy tracklines up to three times with a single charge. Further boost of this power allows him to perform a Spin Dash so violent that while jumping he ricochets with great spped. He is also capable of using this power to release pillars of lightning that exist for a prolonged period of time.
 * Chaos Control from Shadow
 * Super-strength from Knuckles, Vector, Omega and Big
 * Strategic planning from Eggman (maintaining and deploying Eggman's army and fleet)
 * A strong sense of freedom (evidenced by his turning on Dr. Eggman in Sonic Heroes) and identity (claiming to be the real Sonic) from Sonic himself (and possibly Shadow).

Metal Sonic Kai
With the power of the corrupted Chaos Rings, the Dark Rings, Metal can transform into Metal Sonic Kai as seen in Knuckles' Chaotix. This transformation turns Metal Sonic into a gigantic, slightly elongated, red version of himself, while granting him increased strength and power.

Neo Metal Sonic
Metal Sonic assumed the form of Neo Metal Sonic for the majority of Sonic Heroes, where he used it to disguise himself in order to copy the other teams' data. While most details of Metal Sonic's abilities while in this form remain unknown, it is shown that he is capable of shapeshifting and shooting powerful bolts of lightning from his hands.

Metal Madness
Using the data from Team Sonic, Team Rose, Team Dark, Team Chaotix and Chaos, and as well as parts of Eggman's other machines, Neo Metal Sonic can transform himself into a super powerful version of himself called Metal Madness. In this form Metal Sonic possesses a flamethrower, missile launchers and massively increased strength. Eggman states that he is so powerful in this state that they have a slim chance of beating him, even with all seven Chaos Emeralds.

Metal Overlord
After completing his transformation as Metal Madness, Metal Sonic becomes Metal Overlord. In this form he sprouts wings, thus gaining the ability to fly, the ability to shoot crystals and perform Chaos Control. In this form he becomes so powerful that he is nearly invincible, even to super transformed characters.

Sonic the Comic
In the United Kingdom's official Sonic publication, Sonic the Comic, "Metal Sonic" was relegated to the character's title, and Sonic's robot double was redubbed with the name of "Metallix" (hence, he was "Metallix, the Metal Sonic").

Metallix first appeared in the magazine's adaptation of Sonic CD, in which it was destroyed by Sonic. However, it was later revealed that this first Metallix was merely one of a vast brotherhood of identical robots, known collectively as the Brotherhood of Metallix. Ruled by a giant red-and-gold Emperor Metallix, the Brotherhood captured the Omni-Viewer, allowing them to travel back in time, and erase Doctor Robotnik from history. Since it had been Robotnik's assistant Grimer who built the Metallix robots, and Robotnik had contributed only a self-destruct mechanism, the Brotherhood was able to conquer Mobius, leaving Sonic in the unenviable position of having to travel back in time and ensure that Robotnik existed. With the time line back in place, Sonic was forced to ally with Robotnik to defeat the Brotherhood of Metallix once and for all.

Archie Comics
Various Metal Sonic models has appeared in the Archie Comics, such as Sonic the Hedgehog, Sonic Universe and briefly in Archie Sonic X Issue 40. Metal Sonic first appeared in issue #25, the Sonic CD adaptation, in which he was incorrectly named Mecha Sonic. He raced Sonic as part of one of Robotnik's traps, but was destroyed at the end of the issue.

Metal Sonic returned in the adaptation of the game Knuckles' Chaotix. He was transformed into a giant red version of himself by a "Power Gem," but was destroyed by a similarly empowered Knuckles.

Metal Sonic's next appearance was in a two-part storyline in issues #86 and 87. He had rebuilt himself by the power of the Power Gem embedded in him, and boasted improved powers and a new design. He captured Tails while he was gathering firewood in the forest in which the Freedom Fighters were stranded. Metal Sonic confronted Sonic, then made him race for his friend's life to the top of the soon to erupt Mt. Mobius volcano, where Tails was tied. Despite Metal Sonic's attacks along the way, Sonic made it to the summit of Mt. Mobius just as the lava began to rise. Though it seemed like they were doomed, Sonic and Tails refused to abandon one another, showing Metal Sonic that there was more to life than power. Metal Sonic held back the lava for them and Sonic and Tails managed to escape, but Metal Sonic was destroyed in the effort. (This is similar to the Sonic OVA where Metal Sonic is destroyed at the end by lava)

A year later, a new series of Metal Sonics was re-created from scratch by Eggman, with the first being created as part of a storyline involving a 3-way battle between himself, Shadow, and Sonic. These new Metal Sonics would from then on become fierce foes that Sonic and his allies would confront regularly.

Sonic the Hedgehog: The Movie
Metal Sonic also starred in Sonic the Hedgehog: The Movie as Sonic's main rival. In this movie, they had a mind link and were able to hear each other's thoughts. He mainly communicated in bleeps and other such robot-like noises, and was as depicted being more powerful then Sonic in this incarnation, besting him whenever they fought. Near the end of the movie, Metal Sonic was influenced by Sonic's thoughts and sacrificed himself to save the President and Old Man Owl.

The personality of this Metal Sonic is slightly different than his game counterpart. He seems to be rather sane and acts rather solo than compared with himself in Sonic Heroes. Nearing the end, he falls into a volcanic precipice after an epic battle with Sonic. Sonic attempts to save him, but Metal does not accept, replying "there is only one Sonic". He is then destroyed in the magma, and this implies that Metal, though he was programmed for evil, is fully sentient and autonomous. It was also stated by Tails that Metal Sonic received Sonic's personality traits and memories when Sonic's data was transferred into Metal Sonic's.

Miscellaneous
Metal Sonic has never made an real appearance in any of the Sonic television series. However, there was an artificial replica of Sonic (which required a pilot to operate) in the episode "Pseudo-Sonic" from Adventures of Sonic the Hedgehog, which the Robotnik from that universe also claimed to be his greatest invention ever (a claim he also made on several other occasions). Metal Sonic was also among the various candidates fans believed to have the red eyes seen at the end of the canceled Sonic the Hedgehog series, before it was revealed by the creator that they belonged to Ixis Naugus.

Allies

 * Doctor Eggman (Creator) (Occasionally)
 * Shadow the Hedgehog (Sonic Rivals 2 Only)

Enemies

 * Sonic the Hedgehog (Organic original and arch rival)
 * Miles "Tails" Prower
 * Knuckles the Echidna
 * Shadow the Hedgehog (Except Sonic Rivals 2)
 * Amy Rose
 * Doctor Eggman (Occasionally)

Theme Songs

 * "What I'm Made Of..." - Crush 40, played during the battle against Metal Overlord
 * "Never Let It Go (Death Egg's Eye)", played during the battle against him in Sonic the Fighters.
 * "Metal Sonic" - Howard Drossin, from the Virtual Sonic album.
 * "Look-a-like" - Riu Konaka, From the Sonic the Hedgehog: The Movie
 * Metallic Madness - The Japanese music of this Zone during present time is played during Metal Sonic's All-Star move; Maximum Overdrive.
 * Stardust Speedway Bad Future - Initially the stage music for the Stardust Speedway Bad Future zone, the Japanese music became his boss theme for him in Sonic Generations and will be reused in Sonic the Hedgehog 4: Episode 2 as the theme to his race at the end of Death Egg Mk II Zone act 1. This theme has widely been accepted as Metal Sonic's Theme

Memorable Quotes

 * "All Life Form Data.....Successfully Copied." - Neo Metal Sonic after he copies the data of Sonic, Knuckles and Tails after they defeated 'Dr. Eggman' in Sonic Heroes.
 * "Ultimate Life-Form Data....Has Been Copied." - Neo Metal Sonic after he copies the data of Shadow after Team Dark defeated 'Dr. Eggman' in Sonic Heroes.
 * "Chaos Data... has been copied" - Neo Metal Sonic after he releases Froggy and Chocola after being defeated by Team Rose in Sonic Heroes.
 * "All living things kneel before your master!" - Neo Metal Sonic says before starting his transformation of Metal Madness in Sonic Heroes.
 * "I'll tear you to pieces" - Metal Madness when beginning his fight with Team Rose.
 * "Burn to DEATH!" - When using his flamethrower against Team Rose/Dark in Sonic Heroes.
 * "It's too late..." - Metal Madness talking to Team Rose after being beaten in Sonic Heroes.
 * "You're all useless now that I've copied all of your data." - Metal Madness to Team Chaotix at the start of the battle in Sonic Heroes.
 * "GET AWAY!" - When using his claw missiles against Team Chaotix/Dark in Sonic Heroes.
 * "This victory shall soon turn into despair!" - Metal Madness says to Team Chaotix after being beaten in Sonic Heroes.
 * "Even the ultimate life form can't stop me!" - Metal Madness during Team Dark's part of the battle in Sonic Heroes.
 * "How appropriate to have a robot overlord rule a robot kingdom!" - Metal Madness to Team Dark after being beaten by them in Sonic Heroes.
 * "Long time no see, Sonic, my loathsome copy." - Metal Overlord before starting his battle with Team Super Sonic in Sonic Heroes.
 * "Sonic... I was created for the sole purpose of destroying you. But I can never seem to defeat you. That is why I transformed my body with my own hands." - To Super Sonic in the boss fight.
 * "I'll crush you!" - Metal Overlord after picking up one of Eggman's ships in and before throwing at Team Super Sonic in Sonic Heroes.
 * "But that was the past. Now you're nothing but a speck of dust to me" - To Super Sonic in Sonic Heroes.
 * "See me as I am, no longer afraid of anything! I shall become the ultimate overlord, ruling as the world's most supreme being!" - To Team Super Sonic in Sonic Heroes.
 * "Why! I had it all! I am the ultimate overlord, Metal Sonic! I am the real Sonic!" - Metal Overlord after being defeated by Super Sonic, Tails and Knuckles in Sonic Heroes.
 * "It's no use....but why can't I defeat you...?" - Neo Metal Sonic question after his defeat before transforming back into Metal Sonic in Sonic Heroes.
 * "FACE ME IF YOU WISH TO HAVE THE CHAOS EMERALD." - Classic Metal Sonic before Classic Sonic begins to battle him in Sonic Generations.
 * "I WILL BATTLE YOU AS MANY TIMES AS IT IS NECESSARY."- Classic Metal Sonic before you rematch him in Sonic Generations.
 * ".........Whoever clears all of the stages first wins." - Metal Sonic before battle in Sonic Pinball Party.

Trivia

 * Although Metal Sonic 3.0 appears in Sonic Rivals 2, it is unknown which (if any) of the previous versions of Metal Sonic (Mecha Sonic?) are versions 1.0 and 2.0. In the Archie universe, the original Metal Sonic made by Dr. Ivo Robotnik was 1.0, and the other Metal Sonics made by his alternate counterpart, Doctor Eggman, were all 2.0.
 * Sonic Rivals 2 was the first Sonic game where Metal Sonic has done some heroic deeds (by helping Shadow save the world from the Ifrit then giving Shadow the Chaos Emerald in order to get Shadow out of the Ifrit's World).
 * GameDaily placed Metal Sonic 13th on their "Top 25 Video Game Robots" list, describing him as Dr. Eggman's "greatest creation" and praising the strength of his abilities.
 * In Sonic Heroes, Metal Sonic wants to prove himself to be the "real" Sonic and even greeted his organic counterpart with the words "loathsome copy". This is in contrast to his depiction in Sonic the Hedgehog: The Movie, in which he solemnly accepts his fate with his sole line "There is only one Sonic".
 * Though Metal Sonic is playable in Mario and Sonic at the Olympic Winter Games, in the DS version he is also a boss character.
 * Metal Sonic's pose during the ending of Sonic the Hedgehog 4 Episode I, looks just like his pose in Mario & Sonic at the Olympic Winter Games.
 * Metal Sonic rarely speaks and his voice is only heard during Sonic Heroes, while in all of his transformations (Neo Metal Sonic, Metal Madness, and Metal Overlord, as well as when he is disguised as Eggman). Interestingly, he share's Sonic's voice actor. He also speaks with a text bubble in Sonic Generations, even though it was previously believed that the capability of speech was a Heroes-only ability.
 * Metal Sonic's 2D Sonic Channel artwork looks similar to his Sonic Rivals 2 pose.
 * Metal Sonic is one of the few characters with more than one transformation.
 * Metal Sonic is considered Sonic's first rival in the series.
 * Metal Sonic is the most recurring robot in the series, next to E-123 Omega.
 * Metal Sonic is presumably the only recurring character in the Sonic series to be killed off (not counting Sonic, who is revived from when Mephiles kills him, Maria and Gerald Robotnik, who only appear in flashbacks and recordings, and Eggman Nega, who is likely to die of dehydration in the Ifrit's dimension before the events of Sonic Unleashed unless he somehow escapes).
 * In the game "Spiral Knights", players who purchased a copy of Sonic CD on Steam before January 31st, 2012, received a Metal Sonic costume for their knight. This costume was also available to purchase in-game.
 * Metal Sonic is one of four of Eggman's robots who betray their creator, the other three being Gamma, Gemerl, and Omega.
 * In Sonic Generations, Metal Sonic is the only rival that doesn't appear in the Center of Time before Modern and Classic Sonic confront the Time Eater (Assuming he was destroyed when Classic Sonic defeated Him), or appearing at the party within completion of the game.
 * Another possible explanation for this is that Metal Sonic is Sonic's enemy in addition to rival, so he would not be cheering the Sonics on during the final boss and since he obviously is not Sonic's friend and he would not be at the party either.
 * There is evidence to support that he was at one point going to be playable inThe 2006 Sonic game, but at one point was scrapped. Said Evidence can be found here.
 * When Metal Sonic in Sonic 4, absorbs the ancient artifact of Lost Labyrinth he somewhat resembles Hyper Metal Sonic when he activated in the OVA.

Gallery
For more images, see: Metal Sonic/Artwork