Balloon Boy is one of the most powerful characters in the game and is extremely useful on taking down enemies with Balloons 2, an Blazing Orange attack that launches a multitude of balloons that all choose randomly a target, guaranteeing massive damage on enemies, same with Mega Bite that hits all enemies and does huge amounts of damage. Nightmare Balloon Boy's role in the game is to help the player along with other party members to defeat encountered enemies and bosses. He is unlocked when the player completes Foxy Fighters with an A rank. Nightmare Balloon Boy is a new character from the Halloween Update that is used by the player alongside a party.
His size appears to have not changed since FNaF 4: Halloween Update, making it look significantly much bigger than the rest of the party members. His eyes appear to be bigger than from FNaF4. These include several rows of sharp teeth, red eyes and sharp fingers. He looks somewhat the same as his Five Nights at Freddy's 4 counterpart. Nightmare Balloon Boy is a humanoid animatronic and the nightmarish version of BB. He is unlocked by beating the minigame Foxy Fighters and getting an A rank. He first appeared in Five Nights at Freddy's 4: Halloween Edition as one of the antagonists of the game that replaced Plushtrap. Nightmare Balloon Boy is a character in FNaF World.