Petey Piranha is a big, muscular man, a little clumsy, perhaps a little slow on the uptake, but blessed with a certain gruff charm and a hellacious physical strength. And hes always hungry: hungry for competition, for victims, for progression to the top of the card. Compare that with Ryback, a large, tall mutated plant of limited intellect, but one gifted with a self-deprecating sense of humour to offset his clumsiness. Ryback is voraciously hungry, as all Piranha Plants are, and omnivorous to boot: hell eat anything, something Mario constantly has to be wary of during their encounters.