She is an android created by the roboticist Gemma, CadyShe is an android created by the roboticist Gemma, Cady's aunt. M3GAN was originally programmed to protect Cady after the deaths of her parents, but eventually it begins to go rogue to the point of killing people. M3GAN appears as a young human girl with blonde hair and a pair of cold, robotic eyes with grey irises. She is usually seen wearing a long-sleeved green shirt with a striped pattern on its sleeves, and a brown coat with a blue tie.