This 80sTees.com exclusive Masters of the Universe t-shirt shows Castle Grayskull on a cloudy Eternia day. Castle Grayskull is instantly recognizable on this t-shirt with its unique drawbridge that forms the lower jaw of a skull-shaped entrance. Anyone who has seen the iconic Masters of the Universe animated series knows that He-Man stood in front of Castle Grayskull when he said the famous words "I have the power"!