User blog comment:SluggishTheMan8/Top Ten Worst DLC Suggestions/@comment-24529455-20150115231946

Sakurai himself said Ridley wouldn't be playable because he's too big. As far as I'm concerned, that's the only argument you need. I wouldn't rule him out because he killed Samus' parents, if that were an issue I don't even think he'd be a boss. Plus, most of the Metal Gear games are rated M (Snake even snaps peoples' necks in Smash), Duck Hunt uses moves from Hogan's Alley where you shoot and kill people, Lucas may have caused his brother to commit suicide, and the Fire Emblem games are full of permadeath. So yeah, I don't think that argument is valid.