Unnamed Sonic robot

The unnamed Sonic robot appears in Sonic Adventure and Sonic Adventure DX: Director's Cut. It is one of the many robotic duplicates of Sonic the Hedgehog created by Dr. Eggman. Unlike many of Eggman's robot duplicates though, this unit was never seen deployed.

Overview

Mechasonic4 — The robot's appearance in *Sonic Adventure*.

In Sonic Adventure and Sonic Adventure DX: Director's Cut, the robot can be spotted inside a stasis tube near Gamma's birth area in the Final Egg. It plays no important role in the story, and it is unknown what happened to this robot, or why Eggman created it.

In other media

Archie Comics

Main article: Silver Sonic v2.0

Silversonic2 — Silver Sonic v2.0 in the comics.

In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, this robot, referred to as Silver Sonic v2.0 or Silver Sonic II, was a Badnik in the Metal Sonic Series created by Dr. Eggman. When Eggman failed to destroy Station Square with Chaos, he sent Silver Sonic II to attack the city as revenge. However, it was defeated by the Knothole Freedom Fighters and Nate Morgan reprogrammed it to serve as the city's defender. It was later destroyed in the line of duty by Shadow the Hedgehog.

Trivia

The robot is, to date, the only Sonic look-a-like to appear in a game (or two if one counts the Director's Cut to be a separate game) to not be fought as a boss or be a playable character (in an official Sonic game). It does however bare a very strong resemblance to the Mecha Sonic featured in Sonic the Hedgehog 2.
Since the robot went on without a name at all in its original appearance, fans and players have called it "Mecha Sonic" or "Silver Sonic" due to its similarities to the Mecha Sonic robots.

Gallery

Playable characters		Sonic (Super Sonic) \| Tails \| Knuckles \| Amy \| E-102 Gamma \| Big \| Metal Sonic*
Non-playable characters		Dr. Eggman \| Beta (Mark II) \| Chao \| Chaos (Chaos 1, Chaos 2, Chaos 4, Chaos 6, Perfect Chaos) \| Cream* \| Delta \| Epsilon \| Froggy \| Grandma \| Mr. Know-It-All \| Pachacamac \| Tikal \| Unnamed Sonic robot* \| ZERO \| Zeta \| Animals (Deer, Elephant, Gorilla, Kangaroo, Koala, Lion, Mole, Parrot, Peacock, Penguin, Rabbit, Seal, Sea Otter, Skunk, Swallow)
Adventure Fields		Egg Carrier \| Mystic Ruins \| Station Square
Action Stages		Emerald Coast \| Windy Valley \| Casinopolis \| IceCap \| Twinkle Park \| Speed Highway \| Red Mountain \| Sky Deck \| Lost World \| Hot Shelter \| Final Egg
Sub Games		Sky Chase \| Sand Hill \| Hedgehog Hammer \| Twinkle Circuit \| Boss
Enemies		Beat \| Bladed Spinner \| Boa-Boa \| Buyoon \| Cart Kiki \| Cop Speeder \| Egg Keeper \| Electro Spinner \| Fighter Aircraft A \| Fighter Aircraft B \| Gola \| Ice Ball \| Icecap's unnamed aircraft \| Kiki \| Leon \| mechanical fish \| Pirate \| Rhinotank \| Sky Deck's unnamed jet fighter \| Spiky Spinner \| Sweeper
Bosses		Chaos 0 \| Chaos 2 \| Chaos 4 \| Chaos 6 \| E-101 Beta \| E-101 Mark II \| E-102 Gamma \| E-103 Delta \| E-104 Epsilon \| E-105 Zeta \| Egg Carrier \| Egg Hornet \| Egg Viper \| Egg Walker \| Knuckles the Echidna \| Perfect Chaos \| Sonic the Hedgehog \| ZERO
Moves/ Techniques	Playable characters	Bolt of lightning \| Climb \| Dig \| Flight Mode \| Glide \| Hammer Attack \| Hammer Jump \| Hover \| Homing Attack \| Homing Missile Launch \| Jump Attack \| Laser Gun \| Light Speed Attack \| Light Speed Dash \| Lure Attack \| Maximum Heat Knuckles Attack \| Pick \| Propeller Flight \| Punch Attack \| Rapid Tails Attack \| Spin Dash \| Spin Hammer Attack \| Spin Jump \| Tails Attack
Moves/ Techniques	NPCs	Arm Punch \| Bomb Attack \| Bomb Gun Attack \| Charge \| Double Punch \| Earthquake Attack \| Electric Arm \| Energy Ball Attack \| Flame Thrower Attack \| Guiding Missiles \| Instantaneous Liquefaction \| Laser Beam Attack \| Homing Tail Slice \| Inhale Attack \| Marble Attack \| Phantom Shadow Move \| Punch \| Quarter Attack \| Scorpion Attack \| Shockwave Attack (Chaos 6) \| Sonic Boom \| Spin Attack \| Spinning Spike Attack \| Spouting Attack \| Squash Roll Attack \| Swing Punch
Gimmicks and obstacles		Bumper \| Bumper Car \| Cannon \| Conveyor Belt \| Crank \| Dash Panel \| Dash Ring \| Drum Can \| Explosion Trap \| Fan \| Flipper \| Fountain \| Goal Balloon \| Hanging Bell \| Helicopter \| Hint Box \| Hint Orb \| Icicle \| Iron ball \| Jump Panel (plate) \| Jump Panel (ramp) \| Laser field \| Lit Panel \| Mirror \| Monkey Detonation Switch \| Orca \| Power cube \| Rocket \| Satellite \| Slot machine \| Spring \| Spring Catapult \| Switch \| Teleporter \| Trick Jump Panel \| Wide spring \| Wind Path \| Zip Line
Objects	General	Air Bubble \| Capsule \| Cart pass \| Chao Egg \| Chaos Emerald \| Doll \| Emblem \| Emerald Shard \| Employee ID Card \| Item Box (Bomb, Extra Life, High-Speed Shoes, Invincibility, Lightning Shield, Shield, Super Ring) \| Key Stone (Gold Statue, Ice Stone, Silver Statue, Wind Stone) \| Point Marker \| Ring \| Sandboard \| Snowboard \| Sonic Token
Objects	Level Up Items	Ancient Light \| Crystal Ring \| Fighting Gloves \| Jet Anklet \| Jet Booster \| Laser Blaster \| Life Belt \| Light Speed Shoes \| Long Hammer \| Lure \| Power Rod \| Rhythm Badge \| Shovel Claw \| Warrior Feather
English voice actors		Ryan Drummond (Sonic) \| Corey Bringas (Tails) \| Michael McGaharn (Knuckles) \| Deem Bristow (Eggman) \| Jennifer Douillard (Amy) \| Jon St. John (Big) \| Elara Distler (Tikal, Station Square Train Voice, Default Menu Voice) \| Steve Broadie (Gamma, Pachacamac, Mystic Ruins Train Voice) \| Tomoko Sasaki (Chao)
Japanese voice actors		Jun'ichi Kanemaru (Sonic) \| Kazuki Hayashi (Tails) \| Nobutoshi Canna (Knuckles) \| Chikao Ōtsuka (Eggman) \| Taeko Kawata (Amy) \| Shun Yashiro (Big) \| Kaori Asoh (Tikal) \| Jōji Nakata (Gamma) \| Tōru Ōkawa (Pachacamac) \| Kaho Kōda (Station Square Train Voice) \| Nobutoshi Canna (Mystic Ruins Train Voice) \| Elara Distler (Default Menu Voice) \| Tomoko Sasaki (Chao)
Music	Songs	Believe In Myself \| It Doesn't Matter \| Lazy Days \| My Sweet Passion \| Open Your Heart \| Unknown from M.E.
Music	Albums	Sonic Adventure Original Sound Track (Digi-Log Conversation) \| Sonic Adventure Remix \| Sonic Adventure: Songs With Attitude Vocal Mini-Album \| Sonic Adventure Original Soundtrack 20th Anniversary Edition \| Passion & Pride: Anthems with Attitude from the Sonic Adventure Era
Other		777 Slots Pinball \| Angel Island \| Auto Running \| Black Market \| Card & Pinball \| Chao Garden (Station Square Garden, Mystic Ruins Garden, Egg Carrier Island) \| Chao Stadium \| Chao in Space \| Chao Machine \| Chao Search* \| Corkscrew loop \| Debug Mode \| E-100 Series \| Egg Carrier \| Egg Carrier 2 \| Emerald Radar \| Freeze \| Life gauge \| Mission Mode \| Mystic Ruins \| Shrine of Knuckles's race \| Shuttle loop \| Sonic Adventure (LCD) \| Station Square \| Station Square Police Department \| Tails' Lab \| Tornado \| Tornado 2 \| Transporter Machine Exclusive to Sonic Adventure DX: Director's Cut*.

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