Ancient Spirits of Evil

The Ancient Spirits of Evil are an unseen force in the ThunderCats. Mumm-Ra serves them and he relies on them for power and to transform. they are the reason Mumm-Ra is immortal because he never wanted to accept death. In the original series they never revealed themselves, but they did possess four statues in Mumm-Ra's lair to give him his power. They are able to speak through a cauldron. There main goal is to destroy the ThunderCats, the spirits were disappointed on Mumm-Ra's repeated failures, so they threatened to remove the Mutants and the Lunataks out of Third Earth.