Young Kimberly Potter is quite unlike her temperamental teammates in the mutant super-team known as the X-Men of2099. Although she lives in a world of tragedy in poverty, she remains a happy-go-lucky young woman, a trait that sometimes grates on the other X-Men. But, thanks to her mutant ability to contort her virtually boneless body into a snake-like form to constrict opponents, Serpentina's teammates tolerate her occasionaly overbearing personality!