Bonnie to have a personality based on a rock musician; boastful, prideful, with the speech pattern of a laid back hippie stereotype.

During the night, Bonnie becomes a sadistic and vengeful killer, murdering any adults at the pizzeria at night to gain his vengeance against his killer. He is by far the most active animatronic, usually being the first one to leave the stage, showing an eagerness to kill. He also seems to be an unfair and dirty player, as one of his tactics is to go to the closet then straight to the office, unexpectedly foregoing his usual route to catch people off-guard. He's also persistent but gives up quickly when he gets repelled, as, in the first game, he's the animatronic that tries to attack the most, but he also doesn't take long to leave when he's shut out.

https://youtube.com/clip/Ugkx1J3VzwpQdL-xUzq-SUi2ZrjxD_D4cqs3 bonnie voice reference