While pretty much every main cast member in Guardians of the Galaxy underwent some kind of massive physical change - from Chris Pratt's weight loss to the application of crazy red tattoos on Dave Bautista - Karen Gillan really had them all beat with her transformation. Not only was she given blue skin, black eyes and a robotic arm, but she also completely shaved off her beautiful red hair. This was revealed as a surprise at San Diego Comic-Con 2013, but now, thanks to the video above, you can actually watch the head-shaving process yourself.
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