The Demons and Ghosts of Chernabog are the undead spirits serving Chernabog. First appearing as the secondary antagonists of Fantasia's segment, Night on Bald Mountain, the Demons and Ghosts are awakened on Walpurgis Night to cause chaos and mischief, until they are forced to rest by the coming of dawn.
In the villain tournaments, they are summoned by their master to spread the Black God's influence across the world.