Enforcer Balloon Boy

Enforcer Balloon Boy, also known as Enforcer BB or Enforcer Unit 2 is animatronic who was going to appear in Fredbear's Chapter 1 and is appearing in Chapter 2. Enforcer BB is a balloon vendor with no eyes nor nose, teeth missing, Nightmare BB hands and two giant cleavers as his other hands. He's the only Enforcer counterpart to have a model. His creator is speculated to be either Henry, Nicholas, William or the "Mysterious Girl". In Chapter 1, his main function was to cut off power if he wasn't watched enough. If the power was cut off, Enforcer Puppet would jumpscare the player and cutting off the guard's head. BB's jumpscare isn't really a jumpscare, rather he stabs the guard and re-programs the guard, allowing the guard to become one of the Enforcers.

He took part in Nicholas' rituals and lost his hands (note that he had two sets of hands but now only has one). In the process of the ritual, he became re-programmed by the Enforcer Bugs and became corrupt. After the ritual, he returns to Fredbear's, where Chapter 2 would take place in. He is associated with clocks, just like Springtrap and William were associated with clocks in Fredbear's Chapter 1. Why is that the case, is unknown.

In Chapter 2, his main function is to, slowly but surely, warn the guard whenever the danger is coming. On Night 5, the player has to face off against him and if the player wins, he'll get killed by BB. After that, the player gets to see a secret cutscene where they can see how BB was created and what his original purpose was.