Really, there's two flavors of CE. On "alignment is a personality chart" there's the clinical psychopath who lacks empathy for others or respect for the law. Which like I described, they can assemble a moral code from first principles on a purely self-interested utilitarian framework. And then there's "alignment is a cosmic force" where CE is the nega-inverse of LG that breaks things and hurts people out of moral duty.The Joker
This is pretty dang good. Well. Thing.Chaotic Evil. Do whatever you want regardless of rules as long as it benefits you personally.
If memory serves, that Joker was actually chaotic good. Or CN...Heath Ledger's Joker from The Dark Knight.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.