How is Piranha Plant's inclusion worse then say, Wii Fit Trainer, R.O.B, or Game & Watch? Yes he's just a common enemy, but come on, the plant's as iconic as anyone else, and Mario, more then any other game, loves it's mooks. I'm dead serious, mario enemies are more vital to the mario series then a lot of named characters, how else do you explain the remakes of the mario and luigi games gaining an entire mode STARRING the guys. As much as people hate to admit it, the regular old goomba is given more love then some franchises. Mario's enemy line-up is probably as iconic in video games as he is, and smash is about celebrating what makes video games great.