From the flash backs of the bitten child from the point of view we can tell their were two animatronics which are Fredbear and Spring Bonnie. Spring Bonnie is a yellow and brown color with a purple bow tie. He also has a guitar with him when playing for the kids, Unlike Fredbear, Spring Bonnie is one of the silent types that doesn't speak unless the purple guy or William afton is wearing it and speaks through it. The spring locks within the suit provides the killing blow to the human if they are wearing it pushing the metal spring locks deeper into the fleshy tissue and certain point kills them. Spring Bonnie only makes appearances in main game play series, he only a cameo from minigames in the third pizzeria arcade. This will have the same abilities as spring trap except for two things which are no rotten corpse inside and replace with the enderskeleton and the second is that controlled by Scott cawthon.