Bunnie D'Coolette (born 3219), birth name Bunnie Rabbot (rah-BOH, pronounced RAH-bot by her own choice), is a mobian rabbit and the wife of her teammate Antoine D'Coolette. Bunnie was among the many mobians subjected to Dr. Ivo Robotnik's Roboticizer after being captured by his SWATbots, though the process was interrupted by Freedom Fighter agents Sonic the Hedgehog and Rotor Walrus, thus only a portion of her body was roboticized. Bunnie accompanied them to Knothole where she joined the Knothole Freedom Fighters, remaining with the group through having her robotic limbs replaced and eventually having them briefly restored to a fully organic form.

Sweet, beautiful, gentle and maternal, Bunnie always looks for the brighter side of life and tries not to let the "lil' thangs" get to her. She's an optimist by nature and has a soft feminine charm and speaks in a heavy southern accent. She's somewhat pragmatic and down to earth, though she's also a good-natured flirt. Despite her girly ways, she has a tomboyish streak in her, especially when it comes to her love of sports (martial arts in particular). She's no pushover from either a physical or a mental standpoint, having a strong sense of courage and determination, and she enjoys competition, though she's never a sore loser. She holds deep love for her friends and family and while she's not afraid to speak her mind, she has their best interests in mind and is always willing to offer her support.

Since being roboticized, Bunnie has had mixed feelings about the experience. Though she has struggled with being a cyborg, she appreciated the abilities her mechanical limbs provided and their usefulness in the fight against Robotnik. One of her most difficult moments came when she learned that her body was rejecting her Roboticized parts. Faced with either a potentially lethal de-roboticization attempt, having her parts disconnected from her, or receiving an upgrade that would make it impossible for her to ever be de-roboticized, she was overcome with turmoil. However, her desire to help defend Mobius won out, and with Antoine's support, she chose to be upgraded. Much later, after Ixis Naugus has crystallized her limbs, he undid the process and inadvertently returned Bunnie to a fully organic state. Though excited to be normal, she soon began to feel insecure after realizing all of her newly founded abilities that came with her former metallic parts were gone. But thanks to Antoine, who had helped her through both life-changing experiences, she was able to regain her composure and carry on her life as a Freedom Fighter. Unfortunately, she soon recognized her diminished abilities in battle, and after Antoine was badly injured and left comatose, she blamed herself.