Bonnie

Bonnie is one of the four main antagonists in Five Nights At Freddy's

Appearance
Bonnie is a lavender-colored rabbit animatronic, with magenta eyes and squarish muzzle. He sports articulated ears that are capable of bending forward (similar to several other animatronics) and wears a red bow tie which is partially obstructed by his chin. Onstage, he carries a dark red guitar. Unlike the other characters, he has round teeth and does not have eyebrows.

Excluding his head and his left hand, most of Bonnie's body appears identical to Freddy's, apart from the latter's color. This version of Bonnie, like most of the animatronics in the first game (except for Foxy), has no visible teeth on his upper jaw.

Locations
Bonnie's starting location is the Show Stage, along with his bandmates Freddy and Chica. Upon activation, he will move to any room on the left side of the restaurant, excluding Pirate Cove. This means he can appear in the Dining Area, Backstage, the West Hall, the Supply Closet, and the West Hall Corner. When looking into The Office, he appears leaning into the left doorway from the blind spot directly behind the left door.

Five Nights At Freddy's 2
Bonnie's older model 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, Toy Bonnie.

Appearance
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 right 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 older animatronics that took place before they got scrapped in favor of the newer models, such as Toy Bonnie.