The Dark Lord Chin-Chin (AKA Double Chin and originally born as Chin) is a powerful member of the Satanist Empire and is among Googolplex's favorites. Googolplex quoted "oh he can take over the Satanist Empire once I die or retire!" since he loves Chin-Chin so much.
How is he a "dark lord" though? He demands people sacrifices 24/7. He is also very annoying by saying "俺はおちんちんが大好きなんだよ！(Ore wa oChinChin ga daisuki nanda yo!, lit. I love Chin-Chin/p***s)" whenever he appears in sight. Speaking of his name, that's the literal meaning of Chin-Chin's name, however he doesn't do any s**ual crap.