Brainiac 8

Brainiac 8 (Indigo) is a superhero character appearing in American comic books published by DC Comics. She first appeared in Titans/Young Justice: Graduation Day #1 and was created by Judd Winick and Alé Garza. Initially a heroic figure and ally of the Teen Titans and Outsiders, Indigo is later revealed to be a mole designed to eliminate opposition to the Coluan species. Laura Vandervoort portrays Indigo in the television series Supergirl.