system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Did Lex Luthor and The Joker ever cross paths? If so, what was their mutual opinions of each other?
gpt
Sure. At certain points when Luthor was running his own Legion of Doom, he made a point of inviting Joker in, since he knows that it's better to have a psychopath on his team instead of having a psychopath miffed at you for not inviting him.