Skullmaster is the main antagonist of the Mighty Max series, a cruel warlock who wishes to plunge the world into darkness. The primary villain of the series and the arch-nemesis of the Mighty One, Skullmaster is an ancient warrior-sorcerer whose lust for power has driven him to destroy at least two civilizations, the Lemurians and the Atlanteans. He destroyed the Lemurians out of wrath when they would not give him the secrets of the key, and he used the souls of Atlantis to power his Crystal of Souls. At some point, Skullmaster was imprisoned deep within the earth, where he sealed the reigning king, Lava Lord, into solid rock and took control of his minions. During the second season, Skullmaster is free to roam the earth and proceeds to cause all kinds of trouble.