Withered Bonnie

Bonnie's older model (also known as Withered Bonnie and referred to in catalog as Bonnie the Rabbit (Withered Version) ) makes an appearance in Five Nights at Freddy's 2, along with the three other older animatronics who have all fallen into severe disrepair. He is replaced by his newer counterpart for the "improved" Freddy Fazbear's Pizza, Toy Bonnie.

Appearance
Bonnie's old model has a very different design - like Freddy Fazbear, he also has two buttons on his chest. His face has been gutted, with most of it being removed, revealing his endoskeleton mechanisms and dangling wires. His lower jaw remains, featuring more teeth than he possessed in the first game. His eyeballs are gone, exposing glowing red irises. His left arm is missing entirely, baring a tiny strip on the topmost section, with a mass of torn wires in its place. The red layering of his mouth has been removed, making his teeth seem longer than before.

His suit has become tattered, particularly around the legs, and a few loose wires poke out of his body. The covering on his right hand and left foot have come off, revealing more of his endoskeleton. He also seems to have a bigger stomach, as it looks more rounded and bigger than his upper body. Also, his chin does not squash his bow tie now, and his suit seems to have changed to a darker shade of blue. Like his appearance from the first game, he also wears a red bowtie.

According to Phone Guy on Night 2, Bonnie's appearance is due to an attempted retrofit of the older animatronics that took place before they got scrapped for the newer models, such as Toy Bonnie.

Behavior
Withered Bonnie will show up in the Main Hall, and climb into the Right Vent when you turn your flashlight off. When Withered Bonnie is in your office, put the Freddy head on a little bit after she appears. Wait about three seconds for Withered Bonnie to leave the office. Failure to put the head on during the right time will result in a death.