Panty & Stocking with Garterbelt

Trans-homers (1x12)

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Panty and Stocking's sibling feud escalates into all-out war when they eat the cores of two warring alien robots and transform into robots themselves. When the alien robots decide to join forces to destroy the human race and merge into a Ghost, Panty and Stocking are once again forced to work together to defeat the Ghost.