Nightmare Chica is an antagonist in Five Nights at Freddy’s 4 and one of the seven nightmare animatronics (eleven if the Halloween Edition animatronics are counted) in the game. She is a nightmarish incarnation of Chica. Similarly to her original counterpart, she hunts for the player exclusively from the right side of the building. Failing to take key actions against Nightmare Chica will result in a jumpscare either by her in the doorway or by the Cupcake in the Bedroom.
She was later reskinned to become Jack-O-Chica in the Halloween update.