Much of Bunnie's early life is unknown. As a child, she was found in the Royal Hills Zone by Rosie Woodchuck and Dr. Chuck the Hedgehog, with no indication of where the young rabbit had come from. She was taken to Mobotropolis were she was raised under Rosie's care, until the city was taken over by Dr. Eggman. It was during this attack that Bunnie sustained some severe injuries. In order to save her life from these injuries, she was forced to have half of her body replaced with cybernetic limbs Chuck. (StH: #255, #281, FCBD: #8)