Lucifer

Known in the Devildom for being Diavolo's-(the next to rule Devildom, prince) close friend and right-hand man. Lucifer is the perfectly flawless but malicious sadist. The mighty first-born. of the 7 demon brothers. He keeps the brothers together, by force if necessary. He is the Avatar of Pride and is the eldest among the seven demon brothers. (He is one of the main characters in Obey Me! One Master to RuleThemAll) the MC-you is a transfer student from the human world and lives in The House Of Lamentation with the 7 brothers.