Toy Bonnie isn't the only character in all of Five Nights at Freddy's to have eyebrows, but he is the only Bonnie variant to have them. His thicker black eyebrows starkly stick out against his bright shiny blue plastic. They give him a ton more emotional range, which is how many players know that he is not intentionally aggressive, but almost seems excited during his jumpscare animation. None of the other Bonnie's have eyebrows like Toy Bonnie, as it might just be an added feature for his face of makeup.