This Masters of the Universe shirt shows He-Man posing with his Power Sword in front of Castle Grayskull. When Prince Adam held up the Power Sword and said, "By the power of Grayskull, I have the power" he transformed into He-Man, the powerful hero that defended the secrets of Castle Grayskull from Skeletor. With amazing and exciting adventures in Eternia, He-Man became one of the most popular cartoon characters of all time!