Curse Devil

The Curse Devil's personality is currently unknown.

When summoned, the Curse Devil manifests as a large, two-headed skeleton with horns, its right skull appears human while the left skull has three eye slits and longer, mandible-like teeth. The Curse Devil has clawed hands and a large, distended ribcage. Whenever it speaks to someone the Curse Devil appears as a dark pair of lips hovering in darkness or as a monstrously large mouth. In the anime, this was changed, with the Curse Devil physically appearing behind the one he speaks to.

Denji under the effects of the Curse Devil. As a Devil, the Curse Devil possesses all of the standard devil abilities. As a contract Devil, it showed its abilities based on its contracts. Curse: Upon its contractor stabbing their target a few times with its nail, the Curse Devil will manifest itself, pick up the target by their arms in a cross position, and mortally wound them by biting into their shoulders and necks while crushing their arms. The contracts with it seen so far are: * In exchange for some of his lifespan, Aki can curse his targets by stabbing them with his nail-shaped sword 3 times. Each time he stabs his target, he shouts Fire! and a finger of the Curse Devil manifests to flick the nail. * In exchange for the loss of sensations on several of their fingers, Santa Claus can curse their targets by stabbing them with a nail 4 times. As revealed by Santa Claus, the stabbing can also be done by another person, and not necessarily by the contractor themself as their contract was activated even when it was Tolka who stabbed Denji instead of them. Invisibility: When the Curse Devil appears, it appears to have the power to make itself invisible and not be seen by others, as when Denji was killed by the Curse Devil, neither he nor Beam could see the Devil, and it looked as if Denji being crucified while hovering in the air.