Chaotic Evil characters with personality traits that play well with a party

[Unoriginal]

You don't have to hate the whole world and want to fight everything and be unable to function on a team or to plan to be chaotic evil.

Even Demons can work together, and for each other. The Demon Princes have armies and generals. Gra'azt has accountants counting his treasures. Yeenoguh's signature creations live in packs. Baphomet and Fraz Ulbu play long cons to trick people into joining their cult. Orcus makes deals with mortals. And it's mentioned most Demons consider eating souls to be abhorrant (even if there are some Demons ready to trample this taboo with feet and hooves).

Those are Demons, the literal personifications of the concept of malevolent chaos and chaotic malevolence.

A mortal likely won't go to the extreme Demons go. You can be chaotic evil because you make a living scavenging battlefields and you let some wounded that might have recovered if you helped die in the filth, for example.