Trust us, GG allen is crazy, if raping chicks, picking fights, shitting and throwing it at his audience isnt tough....i dont know what is...plus i saw a video and he was naked and i thought he pierced his foreskin.....ouch...
If the fight allowed grappling, Maynard from Tool and APC could whoop some ass. Other than that, I think Phil Anselmo from Pantera could do a decent job in a fistfight.