Board Thread:General Discussion/@comment-27023843-20160702213248/@comment-32182236-20171029181235

Indeed, there are several possible justiications for why Chara's doing this, but we have none. Chara hates humanity, and monsters, which is likely why they started wanting to kill in the first place. As they gain power from this, they realize the purpose of their reincarnation-Power, and they start to enjoy klling purely for the sake o power. And then it all goes downhill from there. As for Frisk, they just want to watch everybody die just to see what happens. For FUN.