
Another item able to work against the Lich is the sweater Princess Bubblegum gave to Finn. This weakness is now moot, as the Lich destroyed Billy's gauntlet with ease when Finn used it as stated above. His main weakness is the Gauntlet of the Hero Billy, a magical weapon that fires intense energy blasts. While his power is truly a force to be reckoned with, the Lich has a few known vulnerabilities. The Lich sustains his massive strength by drinking from his Well of Power, a noxious, magic pool of glowing green liquid (which after possessing Princess Bubblegum, was substituted with a mixture of toxic chemicals such as gasoline, lighter fluid, bleach, and plutonium). While the Lich was possessing Princess Bubblegum, he shows powers of pyrokinesis, when he sets her room on fire with his mind. He is also able to implement necromancy, as seen when Finn and Jake entered his lair. When he tried to cross Iceberg Lake, he inadvertently killed all the fish in the lake, and when he fought Finn, he caught Billy's gauntlet bare handed and turned it to dust. He also has the ability to fly, and can kill or destroy virtually anything he comes into contact with. Moreover, he has the ability to possess other people, as seen in "Mortal Recoil" when he survived by possessing Princess Bubblegum. Later in the episode as he makes his way into his lair he has the power to decay anything he walks on. Early on in "Mortal Folly," it was revealed that the Lich has the power to control people's minds, either through telepathy or spoken commands. He also has intact horns in Princess Bubblegum's vision.Īside from his immortality, the Lich has a medley of unholy powers, most prominently the flames he generates around his hands that he fires at his opponents. Before the Lich was struck down by Billy, both of his horns are intact, so it is possible that it got broken off sometime during or after the fight. In the flashback in "His Hero," the Lich was shown to be almost as large as Billy.

His arms are bare bones with various decayed tissues, and his skeletal hands burn with an eerie fire when he casts fire spells. His skin is frayed away from his lips revealing a wicked and perpetual grin. The design used in the series has a helm with curled horns, one of which has broken off, horrific green lights as pupils peering out of his empty eye sockets, and pale undead skin pulled tight against his noseless skull. His first design had a more flattened, simplified look with larger eyes, upward-pointing horns and a different crown and robe.
