JayJay/Canon

JayJay (commonly shortened to JJ) is a character who closely resembles Balloon Boy.

History
JJ was first seen in Five Nights at Freddy's 2 as a simple easter egg. She will sometimes appear under the office table and not to anything.

She later appears as a proper threat in Ultimate Custom Night in which she will try to sneak into your office through the side vent. If she manages to enter she will temporarily disable your door controls.

Trivia

 * Her full name was revealed through copyright listings.
 * She had purple-pink cheeks prior to Ultimate Custom Night, in which they turned blue.