This is a joke not trying to oftend anybody

Chara without a doubt. Sunny just gonna stab himself

Also I've never played Omori, I've only seen one video on it, so forgive me if this statement is incorrect

Well Chara doesn't actually have a knife, and they seem to be more of a sociopath, but I think Chara would win because they literally just destroyed the world (player included) because they wanted to.

Probably the depressed kid with a knife