By your definition yes and no, regarding some people he will act like this but with others, he will not. It's more of a situational thing than a set in stone practice.

Define evil? He does whatever he feels like he needs to do, be that save or condem someone.

Tbh I just found it Ironic and chose to run with it.

Not saying it is her but she is an agent of chaos, chaos can't be predictable.

"She is ancient and powerful, and dangerous. Very dangerous. But you're on to her now. She is never what she appears. Remember that." ―Mara Jade Skywalker

This is going the Legends route mostly, as for Starkiller, I like him as a character a lot, one of the main reasons I got into Star wars.