|First appearance||The One With The Ultimate Fighting Champion|
|Last appearance||The One With The Jellyfish|
|Number of episodes||3|
|Portrayed by||Christine Taylor|
Bonnie is a friend of Phoebe's, distinctly remembered by Rachel for having a bald head. Phoebe asked Rachel if she could set Bonnie up with Ross, and Rachel deviously agreed, thinking that Ross would not be interested due to Bonnie being bald. However, when Phoebe does introduce Bonnie to Ross, it is revealed that she is very attractive and does, in fact, have hair. Ross and Bonnie then become a couple. Rachel takes Phoebe outside the coffeehouse and begins to complain that Phoebe told her that Bonnie was bald. Phoebe explains that she was bald but that she is not anymore. They then walk by the window of the coffeehouse and see Bonnie and Ross sitting together on the sofa with Bonnie's hand on Ross' leg. Rachel is very upset by this as she fears that Ross is going to fall in love with Bonnie.
In the next episode and finale of Season 3, The One At The Beach, Bonnie and Ross are still dating, and Rachel is very jealous. The opening scene of the episode is the gang and Bonnie in Central Perk. Bonnie, Ross and Chandler are talking about Bonnie's first sexual experience, and how it was with a woman.She also states all of the countries and places that she has had sex in. This causes Rachel to cattily moan to Monica about how Bonnie does not talk about anything but sex. Phoebe then walks in and asks the group whether they can all go to the beach so that Phoebe can see a friend of her mom's that she has discovered from her mother's yearbook and an old graduation photograph. Bonnie then tells the group that she cannot go because she has to work.Joey suggests that the group play Strip Poker because it is raining outside and they are all very bored. Everybody initially says no, but as there is nothing else to do, they eventually agree and Joey eagerly goes to look for playing cards. He can only find a Happy Days board game, so they play that instead. The gang all volunteer Joey to strip. He gets down to his boxers, and Bonnie walks in. Rachel, after expressing to Monica her hope that one day Ross and herself will start dating again, is distraught to see her. Bonnie asks what the group is doing. Joey cheerfully tells her that they are playing "Strip Happy Days Game", so Bonnie says that she will catch up and takes off her shirt. Later on in the episode; in the morning; the group complain about the noise that Bonnie and Ross were making last night. The happy couple then walk down the stairs and say what a good night they had.
At the end of the episode, Ross is seen standing in the hallway of the beach house between the bedroom doors of Bonnie and Rachel, wondering which girl to stay with. In the premiere of Season 4, The One With The Jellyfish, Ross chooses Rachel, and goes to break up with Bonnie. Bonnie is last seen onscreen in Rachel's bedroom, with Rachel helping her to apply sunblock on her sunburnt head. Ross later confirms that he has broken up with her.