Characters that rip off a limb out of desperation to survive or win

1) Piccolo, Dragon Ball OG and Z (several times) ripping off his arm to regenerate a new one 2) Dragan, Castlevania (show) in order to not explode due to Trevor hitting him with the Morning Star, rips off his arm and throws it at him so the ensuing explosion hits them instead. 3) The Last Giant, Dark Souls 2, so desperate to kill the Bearer of the Curse that he will rip his arm off to beat you to death with it.