Like Withered Freddy, Withered Bonnie 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 the original Bonnie. 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. Withered Bonnie's right ear is mostly seen being folded, similar to a stereotypical rabbit.
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 the original Bonnie, Withered Bonnie also wears a red bowtie.
According to the secret cutscene in Chica's Cupcake Catastrophe, Bonnie was made along with Chica and Foxy to accompany Freddy. Bonnie and Chica accompany Freddy on the main stage and the dining area, and an employee can control him from a separate room, and can look at him through the camera, just like the other threes.