Ebony Devil has two distinct appearances. The first appearance is bound to its user Devo himself. Its design is based on the ancient Sardinian dolls known as "bronzetti", specifically "The Warrior", a small, bronze statue. It has two disks in front of its chest and holds a dagger in its hand.
Once its effect activates, Ebony Devil is bound to a small doll. It was designed to resemble an African shaman and is distinctive and primal in appearance.
Ebony Devil rarely takes direct commands, instead relying on its own sadistic personality to kill its target. Its personality was inspired by Chucky from the film Child's Play, as well as other horror movies. The Stand acts maniacal and vulgar, frequently laughing while trapping its opponent and devising new torture methods.
Hatred Amplification: Ebony Devil's power activates once Devo is hit by his foe. It then grows more powerful depending on the hatred Devo feels towards his enemy relative to the amount of damage he received. It then can be bound to something to attack on its own. It begins to attack its foe, starting quietly and escaping its opponent's notice, before causing more and more misfortune as necessary. This hatred seems to extend beyond just the person who attacked, but instead includes anyone who might try to help Ebony Devil's target, as shown when it sliced off the face of a bellhop who was trying to help Polnareff.