Any 'evil' Pokemon is typically misrepresented or unrepresented. Lots of Poison and Dark Pokemon fall victim to this because of their use by Team X Y and Z, but the worst by far is probably Beedrill. Like most Bug-types, its use in the games is typically regulated to Bug Catchers and the occasional melting pot trainer, like a Cool Trainer or somesuch.

In the anime, though, poor Beedrill is basically the posterchild for asshole Pokemon. It doesn't matter if the thing has been with you for 50 years and saved your life 4 times. It doesn't matter if it was a cute little squirmy worm a week ago. It doesn't matter if the Goddamn thing runs a multi-million Pokedollar charity, blood drive, AND soup kitchen. If it's a Beedrill, the anime Universe decrees it to be a constantly pissed-off mindless murder machine that wants nothing more than to call its 800 equally pissed-off friends over so they can all shove their three stingers into every hole you have, and then subsequently make more holes, until there's nothing left but a shredded corpse full of blood and honey.