What Makes Him a Bad-ass:
The sweet, but absent minded, inventor Wallace devised a contraption that brainwashes rabbits into no longer craving vegetables. During his attempt to neutralize the rabbit menace in a humanitarian way, his brain gets scrambled with one of the aforementioned pesky hares.
A side effect of the procedure is that he becomes a large, hulking were-rabbit during every full moon. In his were-rabbit state Wallace has the strength of a hundred men, a penchant for destruction and a ravenous appetite (for produce). The only thing that can stop his rampage is to be shot by a golden bullet - or a golden carrot if happens to be laying around.