Board Thread:Wiki Discussion/@comment-25958552-20160731111602/@comment-26887879-20160803100021

I think that at this point how good/evil Chara was when they were alive is up to player's interpretation, much like Frisk's true personallity. Absorbing Asriel's soul and killing humans was THEIR plan, not Asriel's and Asriel was one who was holding back and not allowing them to use full power so they're definitely not corrupted by Asriel.

We know that they didn't have happy life on surface and are obsessed with destruction, which is pretty messed up, but I personally don't treat them as pure "boring" evil. They did some things that can't be justified, but I still think there is the reason why they adopted that world view...