Board Thread:General Discussion/@comment-27130793-20160212011843/@comment-27620479-20160410050956

I think that Chara isn't evil. They are confused, and have an unfinished business. They are helpful, regardless of the path we take, in hope that we can sort out things. Also, they quickly learn from our example.

The narration doesn't go missing at the end of the pacifist route, which implies that Chara is still with Frisk, but lets them take the praise for freeing the monsters. That is, Chara can become genuinely selfless.

Chara also learns how to be a cold blooded murderer if we show them that way, and they easily get too interested in doing so. That is, Chara can become truly evil.