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Mecha Sonic Mk. I, better known as Silver Sonic is a recurring antagonist in the Sonic the Hedgehog franchise. He appears as the secondary antagonist of Sonic the Hedgehog 2 (and its 8-bit counterpart) and Sonic the Hedgehog Pocket Adventure, a cameo antagonist in Sonic Adventure and a minor antagonist in Sonic Mania and Sonic Mania Plus.

He is the first robotic Sonic replica created by Dr. Eggman that appears as the first boss of the Death Egg, and is overall one of the two final bosses of the game alongside his creator. He is also known as Robo-Sonic.


Silver Sonic's appearance varies throughout the years, but for the most part, he is a robotic version of Sonic with a bulky, silver gray exoskeleton, bright orange feet, and a single glowing eye. He has several rotating blades on the back of his head in place of Sonic's quills, which make him resemble the early Western design of Sonic, which was also used in the cartoons. On the back of his shoes are wheels to help him accelerate, and his body appears heavily armored, having a blocky silver gray exterior while the black endoskeleton is visible from the back.

In the 8-bit version of Sonic the Hedgehog 2, however, Silver Sonic appears as a plastic/metallic version of Sonic with a white exterior, a yellow snout with a small blue nose and a panel resembling a smile, and a red and blue visor. He lacks ears, and has a yellow belly with several panels, and no arms. He sports an extendable gray appendage on his stomach that ends in a blue claw, and has a rocket booster on the left side of his body. His legs cannot move, and instead has rocket boosters attached to his blue shoes for him to slide across the area.


Like most of Dr. Robotnik's creations, Silver Sonic is programmed with a very obedient personality. He is willing to take direct orders from his master and will execute them without hesitation.


Sonic the Hedgehog 2 (8-bit)

Silver Sonic makes his first debut in the 8-bit version of Sonic the Hedgehog 2. He is encountered by Sonic at the end of Scrambled Egg Zone Act 3, only to be defeated by him. He can also serve as the final boss of the game if Sonic does not get any Chaos Emeralds.

Sonic the Hedgehog 2 (16-bit)

Sonic encounters a newly built Silver Sonic on the Death Egg, before confronting Dr. Robotnik. Silver Sonic attacks by charging at Sonic, dashing or jumping at him. Sonic jumps on him, avoiding the spines on his back, and eventually defeats him. Silver Sonic was destroyed in several explosions, leaving the way clear for Sonic to confront Eggman.

Lego Dimensions


Silver Sonic (under the name Robo Sonic) makes an appearance in Lego Dimensions as a boss. He is the first robot summoned by Dr. Eggman to battle Sonic. Silver Sonic's main method of attacking is by spin dashing into Sonic. In order to defeat him, Sonic must lure Silver Sonic into spin dashing into Dr. Eggman. He is eventually defeated and replaced by Mecha Sonic in the second phase.

Other Media

Sonic the Comic

Despite his apparent death, Silver Sonic was revealed to have actually survived his defeat, though left with some damages. Sonic and his friend, Tails, later on encounter him on the Death Egg, in which he is defeated once more.

Archie Comics

Silver Sonic made his debut in the Archie comics, in the miniseries; Sonic Quest. His role remains mostly identical to his video game counterpart. Upon defeating him, Sonic later used him to fight on Dr. Robotnik. After reality was changed by the Super Genesis Wave, Silver Sonic’s history became even more similar to that of the game he originated from.



  • Although the character is widely known as Silver Sonic, that was not always the official name. When Sonic the Hedgehog 2 first came out, the character went unnamed throughout the entire game. However, the Japanese manuals have him listed as Mecha Sonic. This was the same name used for the character in the 1993 comic.
    • In the Archie Comics, the character was given the name Silver Sonic, due to his similar appearance to his 8-bit counterpart, who shared that name.
    • Silver Sonic makes an appearance in the videogame LEGO Dimensions, where he is given a completely new name: Robo Sonic.
  • In the Archie Comics, the 8-bit counterpart of Silver Sonic was the prototype of the modern Silver Sonic.
  • Chronologically speaking, the 8-bit Silver Sonic was the first robotic Sonic replica to appear, while the 16-bit counterpart was the second.
  • Despite being the secondary antagonist in the Sega Genesis version of Sonic 2, he physically appeared in only the final level in the game.
  • Aside from his 8-bit counterpart, he is the first secondary antagonist in a Sonic game, as well as the first boss in a 16-bit Sonic game to not be Robotnik himself.


            Sonic the Hedgehog logo.png Villains

Eggman Empire
Dr. Ivo "Eggman" Robotnik | Metal Sonic | Orbot (prototype) | Cubot | EggRobos | Lone EggRobo | Mecha Sonic | Silver Sonic | Mecha Knuckles | Badniks (Egg Pawns) | Tails Doll | Heavy King | Hard-Boiled Heavies | E-100 Alpha | E-101 Beta | Eggman Enterprises | MeteorTech | SCR-HD | Time Eater | Jackal Squad (Infinite) | Replicas Accevive Corp | Robotnik Corp | Hey Ho

Team Dark
Shadow the Hedgehog | Rouge the Bat | E-123 Omega

Babylon Rogues
Jet the Hawk | Wave the Swallow | Storm the Albatross

Eggman Nega's Forces
Eggman Nega | Metal Sonic 3.0

Deadly Six
Zavok | Zazz | Zeena | Master Zik | Zomom | Zor

Black Arms
Black Doom | Eclipse the Darkling

Mephiles the Dark | Iblis (Iblis's Minions)

Nocturnus Clan
Imperator Ix

Battle Kukku Empire
Great Battle Kukku | Battle Kukku XVI | Dr. Fukurokov

Bearenger the Bear | Fockewulf the Wolf | Carrotia the Rabbit | Witchcart

Dr. Eggman | Hard-Boiled Heavies (Heavy King, Heavy Gunner, Heavy Shinobi, Heavy Magician, Heavy Rider) | Metal Sonic

Sonic Boom
Charlie | D-Fekt | Dave the Intern | Dr. Eggman | Lyric the Last Ancient | Mark the Tapir | Metal Sonic | Morpho | Nominatus | Shadow the Hedgehog | Swifty the Shrew

Dr. Robotnik | Agent Stone | Echidna Tribe (Pachacamac) | Scavengers | Lindsey and Jason | Unit

Babylon Guardian | Biolizard | King Arthur | Boom Boos | Dr. Ivo Robotnik (USA) | Scorpius | Captain Whisker | Chaos | Dark Gaia (Dark Gaia's Minions) | Erazor Djinn | Fang the Sniper | Feist | G-merl | King Boom Boo | Ifrit | Merlina | Professor Gerald Robotnik | Pachacamac

See Also
Sonic Cartoon Villains | Sonic Comic Villains | Sonic Manga Villains | Sonic X Villains

           Archie-logo.pngverse Villains

Archie & Riverdale
Aliens | Betsy | Coach Clyde | Chuck Orgle | Dr. Arachnid | Dorsa Finn | Glebo | Maladonia Demon | Medlock | Maria Naut | Mr. Avericci | Mustang | Nilnewz | Paul Boucher | Potato Aliens | Prad and Whitney | Queen Cockroach | Riverdale Reaper | Scarlet Helsing | Stanley 9000 | The Genie | The Great Potato | Vampronica | Vinnie Wells | Alice Cooper | Archie Andrews | Andre | Arthur Adams | Black Hood | Blossom Family | Bret Weston Wallis | Cassidy Bullock | Chad Gekko | Charles Smith | Chic Cooper | Chuck Clayton | Claudius Blossom | Clifford Blossom | Darla Dickenson | Dodger Dickenson | Donna Sweett | Dreyfus Starkweather | Edgar Evernever | Elio Grande | Evelyn Evernever | FP Jones | Francis DuPont | Gargoyle Gang | Gargoyle King | Geraldine Grundy | Ghoulies | Gladys Jones | Hermione Lodge | Hermosa Lodge | Hiram Lodge | Holden Honey | Joan Berkeley | Jonathan | Kurtz | Malachai | Marty Mantle | Michael Matthews | Mustang | Nick St. Clair | Paul Boucher | Penny Peabody | Penelope Blossom | Percival Pickens | Reggie Mantle | Rose Blossom | Sheriff Michael Minetta | Sister Woodhouse | Small Fry Boucher | Southside Serpents | Sugarman | Sweet Pea | Tall Boy | Trash Bag Killer | Warden Norton

Sabrina the Teenage Witch & Chilling Adventures of Sabrina
Satan | Father Blackwood | Madame Satan | Weird Sisters (Prudence Blackwood, Agatha Night) | Batibat | Dorian Gray | Bartel | Plague Kings (Beelzebub, Asmodeus, Purson) | Jerathmiel | Mehitable | The Pagans (Pan, Circe, Nagaina) | Caliban | Jimmy Platt | Green Man | Katrina Spellman | Anirbas | Libby Chessler | Jezebelda Spellman | Drell | Irma Spellman | Brad Alcero | Tim the Witchsmeller | Gem Stone | Cassandra | Wish Spirit | Enchantra Yagami | Shinji Yagami | Spella Yagami

Sonic the Hedgehog
Dr. Eggman | Dr. Robotnik | Snively | Metal Sonic | Mecha Knuckles | Tails Doll | Eggman Empire | Team Dark (Shadow the Hedgehog, Rouge the Bat, E-123 Omega) | Hooligans (Fang the Sniper, Bean the Dynamite, Bark the Polarbear) | Babylon Rogues (Jet the Hawk, Wave the Swallow, Storm the Albatross) | A.D.A.M. | Agunus | Anti-Geoffrey St. John | Auto Automaton | Auto-Fiona | Benedict | Black Death | Boomer Walrus | Brass Knuckles | Breezie the Hedgehog | Brutus Kintobor | Bzzzz | CD-ROM Ram | Captain Claw | Captain Metal Claws | Colin Kintobor | Combot | Comic Book Bots | Commander Brutus | Crocbot | Croctobot | D.R.A.T. | DYNAMAC | Dimitri | Doctor Finitevus | Downtown Ebony Hare | Drago Wolf | Dr. Finitevus | E.V.E | Eel Capone | Egg Sweeper | Emperor Metallix | Enerjak | Evil One | Ferron | Fiona Fox | Flame Legion | Flying Frog | Foxxy | French Frirus | Frost Legion | General Helmut Von Stryker | Grand Chief Whip | Grimer Wormtongue | Hired Mussels | Hunter | Iron Dominion | Iron King | Iron Queen | Ivanna Robotina | Ivo Robughnik | Johnny Snively | Kage Von Stryker | Kid Cruel | King Gong | Kodos | Kragok | Krudzu | Lien-Da | Lightning Lynx | Luger the Echidna | Mammoth Mogul | Marxio Brothers | Mathais Poe | Mecha Sally | Mechanaut | Menniker | Metal Scourge | Metal Sonic Troopers | Metallix | Miles "Tails" Prower | Misty-Re | Moritori Rex | Mr. Beta | Mr. Delta | Mr. Gamma | Ms. Alpha | Nusgau | Octobot | Order of Ixis | Overlord | Patch | Plasma | Proker Metallix | Predator Hawk | Princess Alicia Acorn | Professor Egg | Pseudo Sonic | Rabbot-Zilla | Raiju Clan | Rendfield T. Rodent | Robolactus | Rosy the Rascal | Rykor | Sallactor | Scourge the Hedgehog | Sergeant Simian | Serpentius | Shadowbots | Silver Snively | Sub-Boss | Suguna | Super Scourge | Super Sonic | Syntar | Termite-Nator | The Enchantress | Trogg | Universalamander | Wing Dingo | Xenin | Xorda | Yagyu Ninja | Zan

           Legodimensions logo.png Villains

Bad Guys
Agent Smith | Anacondrai Cultists | Bad Cop | Badniks | Bane (LEGO Batman) | Bane (The LEGO Batman Movie) | Beetlejuice | Bellatrix Lestrange | Billy Numerous | Brain Gremlin | Brainiac | Candy Zombies | Chaos | Cave Johnson | Clayface | Clouse | Credence Barebone | Cybermen | Daffy | Daleks | Dalek Emperor | Death | Death Eaters | Dementors | Demons | Dr. Ivo "Eggman" Robotnik | Draco Malfoy | Earl of Lemongrab | Fern | Flying Monkeys | Forest Blackwell | General Zod | Ghosts (Gauntlet) | Ghosts (Ghostbusters) | Ghosts (Ninjago) | GLaDOS | Gnarlak | Gollum | Goons | Gremlins | Harley Quinn (LEGO Batman) | Harley Quinn (The LEGO Batman Movie) | Ice King | Indominus rex | Joker (LEGO Batman) | Joker (The LEGO Batman Movie) | Kraken | Lex Bots | Lex Luthor | Library Ghost | Lord Business | Lord Garmadon | Lord Voldemort | Lord Vortech | Mammoth | Manti Leader | Mary Lou Barebone | Master Chen | Mecha Sonic | Metal Sonic | Micro Managers | Monsters | Mr. Burns | Mukor | Nindroids | Orcs | Overlord | Percival Graves | Poison Ivy | Queenie Goldstein | Red Fury | Riddler | Robo-Sonic | Sauron | Scarecrow (LEGO Batman) | Scarecrow (The LEGO Batman Movie) | Shadow the Hedgehog | Sorcerers | Stay Puft Marshmallow Man | Stripe | Skeletons | Tails Doll | Terra | Terror Dogs | The Tri | Theif | Trolls | Turrets | Two-Face (LEGO Batman) | Two-Face (The LEGO Batman Movie) | Vortech Minions | Weeping Angels | Wheatley | Wicked Witch of the West

See Also
Batman Villains | Superman Villains | Justice League Villains | Middle-Earth Villains | The LEGO Movie Villains | Ninjago Villains | Back to the Future Villains | The Wizard of Oz Villains | The Simpsons Villains | Scooby-Doo Villains | Portal Villains | Jurassic Park Villains | Doctor Who Villains | Ghostbusters Villains | Mission: Impossible Villains | Harry Potter Villains | Adventure Time Villains | Gremlins Villains | LEGO Villains | LEGO DC Villains | Steven Spielberg Villains | Powerpuff Girls Villains | Teen Titans Villains | Sonic the Hedgehog Villains | 20th Century Studios Villains | Amblin Entertainment Villains | Cartoon Network Villains | Paramount Villains | Metro-Goldwyn-Mayer Villains | Sony Pictures Villains | Matrix Villains | New Line Cinema Villains | Warner Bros. Villains | SEGA Villains | Universal Studios Villains

           Sonic the Hedgehog Manga Villains

Dr. Eggman | Omelettes
Anton Veruca | Veruca Family


Migu Veruca | Hogi Veruca | Hud Veruca | Mad Veruca | Tod Veruca | Mecha Sonic | Metal Sonic | Robo Sonic | Echidna Robot | Mr. Cook Man #1 | Mama Lemonade | Mushroom Robot