Balloon Boy

Balloon Boy
Balloon Boy is an animatronic in Ultimate Custom Night and was a main antagonist in FNaF 2.

Appearance
Balloon Boy is a humanoid animatronic with blue eyes, a red and blue hat and brown hair. His T-shirt is red and blue, his trousers are dark blue and his shoes are brown. In his left hand, he holds a sign that says Balloons! In his right hand is a red and yellow balloon.

Mechanic
BB: He will try to sneak in through the side vent. Close the side vent and wait until you hear a thud indicating he is gone. If BB slips in, he will temporarily make a nuisance of himself, disabling your flashlight until he leaves.

Strategy
We presume that BB will be visible when in the vent opening so shut the door when you see him. If he is like bidybab from Sister Locations then listen out for audio cues then shut the door.