Springtrap

Springtrap is a character in the comic "Springtrap and Delilah". He is an old animatronic rabbit costume with purple eyes who behaves kindly towards Delilah. His politeness and caution prevent her father, Nick, from suspecting him.
However, Springtrap has a complex character, and his psyche is unstable. He is overly protective of Delia, but at the same time, he has moments of abuse and threats towards her.
Before the events of the comic, Springtrap killed six children to become trapped in his suit, which is why he was called the Fazbear Killer. He tries to hide this identity from Delia, but it later becomes clear that he killed the children only because he wanted to start a family.
Springtrap has a dark side that he's trying to overcome, fearing he'll lose control and hurt someone. Springtrap is afraid of being alone, possibly because of the ghosts of his past that haunt him. He also has some anger issues.