Board Thread:General Discussion/@comment-29788596-20160906011125/@comment-26907577-20190924171636

Why were they forced to kill Asriel? They weren't. The question was never "Is Chara evil once you reach LV 20?"

The answer to that was always a resounding "Yes."

The question is whether they were evil in life.

And "They never wanted to kill their best friend"... Well, yes. But by the end of Genocide, Chara is confident that Asriel was never their best friend to begin with. He betrayed them, let them die to help the humans.

My position is that "Chara wasn't really the greatest person"- heck, probably pretty far down the morality spectrum. But they got much worse over the course of Genocide.