Spring Bonnie is a character from the popular horror video game series Five Nights at Freddy's. It is an animatronic rabbit designed to entertain children at a fictional pizzeria. Spring Bonnie is known for its yellow color and spring-lock mechanism, which allows it to transform from an animatronic suit into a wearable costume. In the game's lore, Spring Bonnie is associated with tragic events, including the disappearance of children. The character is often linked to William Afton, a key figure in the series, who uses the suit for sinister purposes. Spring Bonnie's design and backstory contribute to the eerie atmosphere of the game.