Balloon Boy

Balloon Boy is an animatronic from Five Nights at Freddy's 2. He appears in Retarded64: Return to Freddy's Spaghettiria and makes a small cameo in SM64 Bloopers: Can the Villager come out to play?.

Return to Freddy's Spaghettiria
Balloon Boy first appears on the security camera when Puppet is about to escape the Music Box, threatening to assault Mario. He later appears when Bonnie tries to attack Mario, asking if he can go into the office, only to be knocked out by Bonnie. Afterwards, he tries to enter the office, but is blown up by a thrown grenade. Balloon Boy also can be seen selling "butt scratchers" to the other animatronics before being corrupted by Purple Guy, and is last seen when Mario punches him at Purple Guy, knocking both out.

Can the Villager Come Out to Play?
In this blooper, Balloon Boy makes a cameo when the eponymous Villager destroys an carbon dioxide tank in an attempt to kill Mario. This causes Mario to hallucinate, seeing Villager as a happy Balloon Boy in Candy Land.

Trivia

 * Balloon Boy seems to be the most childish of the animatronics, constantly annoying the others with his cheerful behavior. However, he also seems to possess intelligence, as he sells "butt scratchers" to the animatronics" at one point.
 * The song Balloon Boy sings while going through the air vents is sung to the tune of Jingle Bells.