The youngest of three children, Buttercup is a girl whose appeared to always have an interest in the more dangerous aspects of performing. Her parents were stage magicians, but unlike her parents and two brothers, Lux and Rumbles, Buttercup would be more than willing to put her life at risk with her performances. Her performances ranged from mere trickshots, sword swallowing, and even catching bullets with her teeth. People always noticed that Buttercup seemed to be an entirely different person offstage, as she's typically very grumpy and quite sarcastic, but bubbly and energetic onstage.

Eventually though, the circus they were apart of disbanded, and despite their attempts at becoming street performers, Buttercup always felt that she never contributed as much as her brothers did to the trio. Primarily because her performances weren't really for people's tastes. As such, Buttercup looked into... other means of gaining money.

Her main weapon is her sniper rifle, which can also convert into a pistol for more short range encounters. She seems to carry an endless supply of weapons, which includes a Rapier, Shortsword, Crossbow and even her own claws! Although her preferance always goes towards her rifle.