The Yuuzhan Vong weren't ambigious. They weren't evil really they just had a completely different way of doing things, which by our definition were evil but I think you get what Im saying.

The Emperor continued in the EU and he certainly wasn't confused with a charity worker.

Senator Viqi Shesh was unrepentant up to the end.

and although she was quite insane Alema Rar was evil to the end.

and in my universe Darth Revan was evil to the core, enslaving the entire galaxy BWAHAHAHA. ah hem... sorry.