Springtrap

Springtrap is one of the protagonist in the Fazbear Family and serves as a important character throughout the series. He was created by Scott Cawthon and originally appears in Five Nights at Freddy's 3.

General History
Little is known with Springtrap's history. However one can assume he was part of fredbear's family diner before he was replaced by the Toy Animatronics after a bad incident. He was killed but became a ghost, while golden freddy survived.

Personality (Season 1)
Springtrap is easy going and cares about those who are close to him. However, he gets angry if he's not happy with those who are wrongdoing or have betrayed his trust, or taken advantage of him. Springtrap never wants confrontation, he wants peace with everyone he meets. When Golden Freddy was being unreasonable and wanting to hurt others just to take back his spot on the stage, springtrap scolded him for it and vowed to not be apart of his plan calling him "selfish" in the process.

Trivia

 * Although it's never been explained why he is a ghost in the beginning, it's been speculated that the incident at Fredbear's was the cause of his death.
 * However it's been confirmed by Katie that springtrap indeed was killed.
 * Springtrap was not supposed to appear until season 2. But he was introduced earlier, since katie wanted the story to escalate a little faster.