Nightmare Balloon Boy

Nightmare Balloon Boy only exists in the Fun With Balloon Boy minigame, which functions almost exactly like Fun With Plushtrap. In this game, Nightmare Balloon Boy will sneak his way towards the player, laughing in the background. The player must shine their flashlight to see which hallway Nightmare BB is in. The objective of Fun with Balloon Boy is to shine the flashlight and catch Nightmare BB on the red X that is on the floor infront of them. Should one succeed in this mini-game, the player will begin the next night they play at 2:00 AM instead of 12:00 AM. Failure to complete Fun with Balloon Boy correctly, either via shining the flashlight too much to the point where Nightmare BB won't even move or Nightmare BB reaching the player and jumpscaring them, will result in a black screen with the words "Too bad" in red letters.

Nightmare BB returns in Ultimate Custom Night as one of the selectable characters. When active, he will sit in the office slumped over, and might stand up the next time the player lowers their monitor. If he is standing up, then the player must shine the flashlight on him to make him sit down. Shining the flashlight on him when he is sitting down or putting up the monitor or failing to reset the ventilation when he is standing up will result in Nightmare BB jumpscaring the player, causing a game over.

Nightmare Balloon Boy returns in the second Dark Rooms level in FNaF VR: Help Wanted. He will sneak around in the dark when the player's focus isn't on him in an attempt to kill the player. The player must shine the flashlight on Nightmare Balloon Boy when he is sitting on the red X to successfully complete the game. Successfully completing his game will unlock Plushbaby's game.