The Jester is one of the types of enemies featured in Rise of Nightmares. These miniature mechanical puppets served as the West Tower's guardians, they are encountered only during Acts 3 and 4.
The Jester first appeared lying down on the cradle where it was making a baby's crying noise before shutting down. The Jesters were encountered again on top of the tower after following a ghostly Mary, they were ironically controlling the altered Monica and Max as their own puppets. A dozen of them later appeared, attacking the player by using a kamikaze-like tactics by going near the player and blowing themselves up. Their most notable feature is letting out an insidious laugh.