In the fourth teaser and title screen, Nightmare Foxy had a sharp and pointy tongue. In the game itself, it is not seen anywhere else: in the jumpscare, Extra menu, and Closet. This was either an error by Scott Cawthon or it was removed purposely. Circus Baby • Bidybab • Funtime Freddy & Bon-Bon • Bonnet • Ballora • Funtime Foxy • Lolbit • Ennard • HandUnit • Computer Voice Nightmare Foxy is now in a crouching position, his gaping, toothed lower jaw exposed for the player to see. Unless Nightmare Freddy's tiny counterparts or anything else prove to be a bigger threat, the player should now hold the Closet doors shut on Nightmare Foxy.

Nightmare Foxy turning into a plushie may be a reference to an old theory that the Nightmare Animatronics are the protagonist's toys coming to life. Nightmare Foxy resembles his form from the second game, with his body being torn completely away in his lower body and his head shape. The way Nightmare Foxy hides in the Closet is very similar to the way the original Foxy would hide behind the curtain in Pirate Cove in Five Nights at Freddy's. Just like every other Nightmare animatronic, Nightmare Foxy's head seems to be separated into two parts. Half of his muzzle is completely missing, revealing a metal frame beneath. The material above his metallic, orange eyes has completely rotted away. Large portions of his ears are absent as well.Toy Freddy • Toy Bonnie • Toy Chica • Mangle • Marionette • Balloon Boy • Withered Freddy • Withered Bonnie • Withered Chica • Withered Foxy • Endo-02 • RWQFSFASXC Glitchtrap • Dreadbear • Grimm Foxy • Plushbabies • Nightmare Endo • Tape Girl • Jeremy • Vanny • The Princess However, interestingly, Nightmare Foxy can still be summoned as early as Night 1 on the mobile version, by turning around and looking at the bed and holding the Flashlight on for about 15 seconds. Nightmare Foxy's jumpscare will then be triggered and death will follow.

Occasionally, Nightmare Foxy peeks around the corner immediately after Nightmare Chica or Nightmare Bonnie hides, making it seem as if he appears out of thin air before hiding again. This is most likely a bug. His behavior is also similar to that of Freddy Fazbear from the first game. Both Nightmare Foxy and Freddy only pose a threat to the player if they enter a certain location (the Closet in the case of Nightmare Foxy, and the East Hall Corner in the case of Freddy), both can be prevented from entering this location by constantly monitoring them, and both will not leave this location once they have entered it until the end of the night. Nightmare Foxy was confirmed to be planned for the game, as his name and data is listed within text in Special Delivery's files. However, Nightmare Foxy would never be implemented into the game. Nightmare Foxy is the one of two versions of Foxy whose hand is not exposed, the other being Mangle if it was remodeled after Foxy. His torso is thinner than most of the other Nightmare Animatronics. He has withering all over his body. He has brown "pants" that are ripped away just above the knees, revealing his metallic, ribbed endoskeleton legs and feet, each having four sharp toes. His left hand has five fingers, each jointed, and ending with sharp metallic claws. His right hand is replaced by a large, metal hook. He is also equipped with a segmented tongue ending in a sharp point, however his tongue was only shown in the "Was It Me?" teaser.In Help Wanted, Nightmare Foxy made his appearance in The Freddy Fazbear Virtual Experience along with the other Nightmare Animatronics. Nightmare Foxy's main appearance is in Spooky Mansion's first stage, Hallway Crawl. He will appear in the hallway when the lightning flashes. The player must stop when they see him. If they continue to move, Nightmare Foxy will charge toward them and end their run with a jumpscare. If the player is close enough to Nightmare Foxy when the lightning flashes, he will turn into a plushie and cease to be a threat.