Ash Graven is the central antagonist of Final Space.

Ash is an extremely powerful Serepentian whose powers first emerged after she was forced to watch the snake god Werthrent devour her sister, Harp Graven, during a sacrificial ceremony. In a fit of despair and rage, Ash's powers were activated in a powerful energy blast, which inadvertently killed her parents. Following the traumatic experience, Ash ran away from her home, where she met her new family, her adoptive brother Fox, and her adoptive father Clarence, before joining the Team Squad soon after.