User blog comment:Myself 123/iKnuckles/@comment-115265-20120417103022/@comment-477304-20120417125200

Yeah, what Eggman said, Mecha Knuckles a boss in Sonic Advance, he plays out similar to the fight with knuckles in Sonic & Knuckles excpet about halfway through his outer shell brakes off and he starts firing missiles out of his mouth.