Released on April Fools day in 2017 as a mockery of both the MUGEN ARCHIVE wiki and the game being similar to Mario Kart, Mickey's Speedway USA doesn't make any attempts to portray itself as a serious fighter, as its sole method of attacking is to automatically spawn Mickey karts that increase in frequency as time passes, with the karts eventually becoming so frequent that the opponent is unable to escape its roadkill fate.
Mickey's Speedway USA is a no-button joke character that is unable to move or block. The character cannot be controlled and does not respond to any button presses; instead, it automatically spawns Mickey karts that appear from the side of the screen Mickey's Speedway has its back to, with the frequency of Mickey karts gradually increasing as the round goes on, only stopping once an opponent has been K.O.d.
Because of the long hitstun the Mickey karts inflict when they make contact with an opponent, they are left unable to escape any subsequent karts after the first one has landed a successful hit, though even trying to escape the first kart is a difficult task thanks to its large hitbox, and trying to escape any further karts is mostly an exercise in futility; attempting to guard against the karts is ineffective, as they still inflict hitstun and chip damage, leaving the opponent trapped regardless. Should a character somehow find a way past the barrage of karts, Mickey's Speedway USA is vulnerable to damage from melee attacks and projectiles, though is completely invulnerable to throws and will still spawn karts even while in a hitstate.
Mickey's Speedway USA has no custom A.I. and uses the engine's default; given that it's unable to be controlled with button presses and the Mickey karts are automatically spawned, the behavior of the character when controlled by the A.I. is identical to the behavior when controlled by a human player.
Hovering the mouse cursor over the Command Input icons will display text that refers to the inputs set in M.U.G.E.N's Key Config.
Icons encased in square brackets [ ] require the respective button(s) to be held down. Hovering the mouse cursor over the icon displays the hold duration if applicable.
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This character does not have any palettes, instead using the palette of sprite 9000,0.
This character does not have any victory quotes, meaning it uses the screenpack's default.