Circus Baby (Mean Girls)

Circus Baby is the main Antagonist of BNB 2: Five Nights at Mean Girls. She is killed after being hit by a giant freddy fazbear charjabug. She is a member of the B-Team Polycule.
Circus Baby is a tragic, sophisticated yet sinister animatronic. The Circus Baby minigame shows that Baby killed William Afton's daughter, Elizabeth, due to Baby and the other Funtime animatronics being built to murder children. However Elizabeth’s spirit then began to possess Baby and it’s implied that she forgot who she was and believed herself to truly be Circus Baby.
Baby mainly speaks in a soft, calm voice that almost never raises above a sort of hushed tone. She speaks about children in very happy manner and claims to have enjoyed entertaining them and making them happy, but she seems to be very distraught, confused, and sorrowful due to her situation and hates being trapped in the rental facility and is even deeply traumatized and haunted by her mysterious and dark past. She also often talks about childish things that have little bearings on the current situation like ice cream, birthday cakes, playing pretend and other children, showing that she maintains her childlike mentality that she had as a human; this is especially seen during Night 4 where she compares the scooper to a actual ice cream scooper used at birthday parties.
However Baby is soon revealed to be just like her twisted “father” William. She is manipulative and cunning as she masterminded almost all the events in Sister Location and even acts theatrical as she says one of her tactics is playing pretend and acting to get what she wants and manipulate people. She was also shown to be very abusive towards her only friends as it’s implied she either manipulative or outright forced the other animatronics to take part in her diabolical plan to fuse their parts to become animatronic amalgamation and hive mind mind known as Ennard to escape the facility. Even after accomplishing her goals she was still shown to be a control freak as while being apart of Ennard she seemingly forced the other animatronics inside the amalgam to accept her as the leader and unfairly control them which ultimately led to them betraying her and ejecting her from Ennard.
It's implied that the reason for Baby’s twisted and controlling behavior is because of the time she spent in the underground facility being isolated and tortured may have drove Baby to the point of insanity and caused her to be emotionally and mentally unstable, although it is hinted she only fully shows this side of herself and raises her voice whenever pushed over the edge.
Baby was also shown to be extremely resilient as even after being ejected from Ennard she was able to rebuild herself out of mere pieces of scrap. Unfortunately her mental state worsened as she is more violent, sadistic and aggressive, accepting her role as a killer, and shows glee and excitement at the prospect of murdering children and doing what she was created to do.
Despite Baby’s insanity there are a few people she truly cared about the first being her “brother” Michael Afton although she was mainly manipulating him throughout the game her words sounded surprisingly sincere and it’s implied she truly cared about Michael’s well being as during Night 3 she rescued him off screen from Funtime Foxy albeit in a unethical and odd manner by kidnapping him. Ultimately when it was time for her plan to reach it’s final stage she comforted Michael before she was forced to kill him with the scooper reassuring him it would only hurt for a moment. Afterwards when using Michael skin as a suit to blend in, when Michael’s corpse ultimately decayed and she was forced to abandon it Baby reassuringly said that he won’t die it’s possible she knew he would survive all along and never wanted to truly kill Michael although her views towards her brother changed in Pizzeria Simulator as she actively tried to murder him.
She also seems to have a deep admiration and love for her father and creator William as she vowed to follow in his footsteps and make him proud even affectionately calling William, “Daddy”.
*NOTE: William Afton is the principal, who she manipulated to frame Pancake BNB for sending the entire school to BNB. This may be why she calls Afton daddy.