|Intro||Music box rendition from Five Nights at Freddy's 2|
|Signs of nearing||Footsteps|
|Origin||Five Nights at Freddy's 2|
|Map(s)||Return to Freddy's|
|Partners|| Withered Freddy, Withered Chica, Withered Foxy, Withered Golden Freddy|
Toy Freddy, Toy Bonnie, Toy Chica, Mangle, Balloon Boy, Marionette (sometime)
Withered Bonnie is a boss in Slender Fortress.
In the second game, Bonnie 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. His lower jaw remains, featuring more teeth than he possesses in the first game as well as glowing red irises. His left arm is missing entirely, 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 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 as opposed to a lavender color. It is explained in-game that this new appearance is due to an attempted retrofit of the old animatronics that took place before they got junked in favor of the toy models such as Toy Bonnie.
In Slender FortressEdit
Withered Bonnie might probably acts like Bonnie. He is hardly persistent and is fairly easy to evade, but mostly spawns out of nowhere, (especially around corners) and usually sandwiches the players between himself and Withered Chica. His average speed can be rendered even slower when the player looks at him, and is a one-hit-killer, killing the player in a unique jumpscare gif.