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Considering how popular the superhero genre is, plenty of actors have gotten to portray iconic comic book characters. But these coveted roles also take a lot out of its cast, who are often required to get super ripped or otherwise transform themselves physically. Karen Gillan famously shaved her head to play Nebula in the first Guardians of the Galaxy, and recently got a haircut in order to reprise that role in Thor: Love and Thunder. Gillan already returned home after wrapping her role, and explained the wild way she goes back to her daily appearance.