Mecha Sonic

Mecha Sonic (formally known as Mecha Sonic Mk. 2) is an antagonist in the Sonic the Hedgehog series, debuting in 1994's Sonic & Knuckles.

He is also a boss in Nexed.

Real-World History
Mecha Sonic debuted in 1994's Sonic & Knuckles, being the boss of Sky Sanctuary Zone whose battle differs depending on which character the player is controlling. If the player is controlling Sonic and/or Tails, Mecha Sonic has three phases, with the first two being callbacks to bosses from the first two Sonic games. The third phase is remarkably similar to the first Mecha Sonic's battle in the Genesis version of Sonic the Hedgehog 2; After he is defeated, Sonic and Tails move onto the Death Egg Zone.

If the player is controlling Knuckles, Mecha Sonic instead serves as the game's final boss. While his first phase resembles his third from a Sonic/Tails playthrough, the second phase has Mecha Sonic use the power of the nearby Master Emerald to transform into Super Mecha Sonic, having a much different attack pattern.

While he seldom appears in video games outside of his debut appearance, he makes recurring appearances in Sonic comics from several different publishers. As of 2023, his most recent game appearance is in the Minecraft Sonic Texture Pack, where he serves as a stand-in for the Wither boss while having been almalgamated with several other Sonic robots.

Mecha Sonic has become a popular character among Sonic fans, partially due to the character's portrayal in the fan-made Super Mario Bros. Z webseries, which would be referenced in the Scrapnik Island mini-series of the IDW Sonic the Hedgehog comic line.

Gameplay Information
TBA

Mecha Sonic is fought on the boss version of Sky Sanctuary, with one of four songs being chosen to play at random:
 * TBA
 * TBA
 * TBA
 * TBA

Grounded Attacks

 * Jab: Mecha Sonic swipes a claw forward.
 * Forward Light: Mecha Sonic throws a roundhouse kick.
 * Up Light: Mecha Sonic throws an uppercut.
 * Down Light: Mecha Sonic throws a sweeping kick.
 * Forward Strong: Mecha Sonic throws a series of rapid punches.
 * Up Strong: Mecha Sonic curls into a ball before leaping upwards, dealing multiple hits of damage before launching opponents with the final hit.
 * Down Strong: Mecha Sonic sweeps his leg around himself, leaving a ring of fire in his wake.

Aerial Attacks

 * Neutral Air: Mecha Sonic curls into a ball and spins erratically, dealing multiple hits of daamge.
 * Forward Air: Mecha Sonic throws a roundhouse kick.
 * Back Air: Mecha Sonic throws a shoulder bash behind himself.
 * Up Air: Mecha Sonic throws a backflip kick.
 * Down Air: Mecha Sonic performs a single-footed stomp, being able to spike opponents.

Stage Intro
Mecha Sonic suddenly slams onto the stage from above, raising his head to look at the opponent before entering his battle stance with a dynamic pose.

Taunts

 * Mecha Sonic revs his spines, referencing the first Mecha Sonic from Sonic the Hedgehog 2.
 * Mecha Sonic glares towards the camera.
 * Mecha Sonic beckons the opponent before clenching his fist.
 * Mecha Sonic poses as he surges with energy. On rare occasions, he will yell "I'LL CRUSH YOU!" in reference to Super Mario Bros. Z.

Victory Animations
Mecha Sonic's victory theme is a metal cover of the Game Over jingle from Sonic the Hedgehog 3.
 * Mecha Sonic surges with energy as he poses.
 * Mecha Sonic slams into the floor in a three-point landing pose, glaring at the camera.
 * Mecha Sonic crushes an Eggrobo's head beneath his foot before glaring at the camera.

Defeat Animation
Mecha Sonic begins to malfunction before crashing to the ground and exploding.

Trivia

 * When being designed, Mecha Sonic was briefly considered to have his Scrapnik Island or Minecraft designs be his default appearance. However, the original design from Sonic & Knuckles was chosen due to its recognition, with elements of the other designs being worked into Mecha Madness.
 * Notably, Mecha Sonic was accidentally leaked when Faz asked for feedback regarding the design issue in the Nexed Discord server.
 * While Mecha Sonic's moveset mainly borrows from Sonic canon, the Back Air and Mecha Madness' Forward Strong are references to Super Mario Bros. Z.