Black Adam

Teth-Adam is the last King of Kahndaq and Champion of the great wizard Mamaragan, he was originally born a slave in Kahndaq however, he grew up both cheerful and easily angered, and so the Wizard chose him to eliminate the Seven Deadly Sins but his choice was rash and quick, leaving Adam to quickly become a feared evil ruler, this made the Wizard come out of hiding and send him into the Rock of Eternity where he's been ever since.