Dungeons & Dragons
Alignment descriptions are revised from a post by Reddit user Romnonaldao.
A neutral evil character has no regard for anyone but themselves. A complete sociopath. Feels the need to feed only their own ego, and that everyone else is in the way, or taking something away from them. Even if a person was doing nothing but giving to this person, they would give no gratitude. Completely self-obsessed, but would help others if they saw a benefit in it for themselves. Would ask a high price to lift their hand to help another. On the same note would kill, if there were benefit in it for them and they thought they could get away with it.