Bonnie was generally considered to be a very rude, snobby, self-absorbed girl with a dismissive, cold attitude, and a superiority complex, especially toward Kim, Ron, and their friends, whom she largely considered to be beneath her. She was driven by a near-constant need for recognition, and almost always demanded to be the center of attention, no matter what the situation was. Bonnie's self-obsession was such that she could not be bothered to care about the problems of others, even if they were far more important than her own desires.

She was also very aware of Middleton High's social "food chain", and desired more than anything else to climb to the top and stay there. As such, Bonnie devoted much of her time to following the latest trends, obtaining the hottest gossip, ensuring that she was consistently attached to a highly popular boyfriend, remaining on good terms with the most popular Senior students, and putting down anyone she came across that she considered to be on the lower rungs of the social ladder.

Bonnie was long thought to be mean in general, for little reason other than she could. However, while bonded to Kim's hip for a short time, it was strongly implied that Bonnie's sour disposition stemmed largely from her two older sisters, Connie and Lonnie, who were just as verbally abusive to Bonnie as she typically was to others, to the point where Kim was clearly uncomfortable having witnessed the exchange.

True to her somewhat spoiled nature, Bonnie hated having to work hard. She would, however, put this aside and devote a tremendous amount of energy into the things she was most passionate about, such as cheerleading. Even Kim, despite her less than stellar relationship with Bonnie, eventually admitted to being impressed by how driven Bonnie was to replace her as the Middleton High cheerleading captain. Bonnie did gain the position, with the surprise help of Kim adding her support. Kim then explained that the hard work was only just beginning, and once Bonnie realized the enormous responsibilities of actually being the squad captain, she had second thoughts, and presumably gave the position back to Kim sometime within two weeks or so.

Bonnie was also not above cheating to achieve her goals, such as rigging her senior year Homecoming vote to become Queen, a result which could only enhance her standing on the proverbial "food chain", if not take her to the top