Ennard

Ennard is the climax and true main antagonist of Five Night's at Freddy's: Sister Location. He is an alternate persona for Circus Baby, and he represents her badness. He is controlled by Ballora, who also possesses his head. He is also responsible for Bite of 83, where Circus Baby killed a little girl.

History
He is built and controlled by Ballora, and he possesses Circus Baby as her alternate persona. Later, Circus Baby and the other animatronics get scooped, and Ennard is built from them all, as Ballora controls his head. However, near the end, the technician destroys him and releases Circus Baby from his form. In a minigame, it is also revealed he possesses Circus Baby and causes her to kill a little girl, causing the Bite of 83.