Who Are the Guardians of the Galaxy?

Our beloved Karen Gillan (yep, of Doctor Who fame) went bald to embody Nebula, a Luphomoid known for her combat and strategic battle kills. Her wrist-bound blasters can project extreme heat and energy, and she also possesses an appearance-disguising device. Nebula was originally part of a troop of space mercenaries and pirates.

Karen said that the most interesting thing about the character is her "strange and complicated relationship with Gamora," whom Nebula follows as one of The Graces.

Source: Tumblr user MarvelGuide, Getty / Ethan Miller