Bunny leads a rebel faction opposing inventor Uzal Delilah on Cenancle Island, motivated by grievances against his authority. Her group wages anti-establishment activities and adopts a distinctive cosplay theme, with Bunny consistently appearing in a bunny girl outfit as their visual identifier and symbol of resistance.

Her rebellion culminates in an attempt to seize control of B.U.E.R., a powerful experimental machine owned by Uzal's company. Bunny's group activates it using a dummy code, inadvertently causing the machine to go berserk and unleash destructive attacks across the island. This forces a confrontation with the protagonists, Nene Nanakorobi and Clarion.

Following the failed activation and subsequent rampage of B.U.E.R., Bunny and her comrades are apprehended by Cenancle Island's military forces during or after the incident, effectively ending their active rebellion.