Bonnie

Bonnie the Bunny, also known as Bonnie and The Bunny, is the secondary antagonist of Five Nights at Freddy's. Bonnie is a purple animatronic bunny in a red bowtie. Like his fellow animatronics Freddy and Chica (and formerly Foxy), Bonnie is a friendly child entertainer during the day housed at Freddy Fazbear's Pizza, but kills any human he sees during the night. Bonnie is the most active enemy in the game and is usually the first to move, slowly making his way to the player's office (teleporting instantly on later nights) and will always appear in the left doorway.

The player can lock him out. Otherwise, Bonnie will simply stand there until the player checks the camera or the power runs out. If they check the camera, Bonnie will be triggered into attacking. However, with enough power left you can keep checking the monitor until 6 AM and Bonnie will be stalled. If the power runs out, Freddy will attack instead. An easy way to check if Bonnie is behind the closed door, is to turn the light on and faintly expose his shadow from the window. Bonnie is often able to travel quickly. If he waits outside the door, it isn't for very long, although if he is far from the office, he can travel there very quickly. Shutting the door on him wears him out quickly into leaving, as opposed to the persistent Chica. He is also the first to leave the stage. One of his dirtiest tactics is to hide in the storage closet, and bound to the office at an incredible speed, and catch Mike off guard. He is very unpredictable and possibly impatient as he twitches constantly on Night 3, indicating he might be getting frustrated. Many believe he is possessed by the soul of a dead child explaining his wheezing sounds, and unpredictable behavior.