In Masters of the Universe, Prince Adam defended the secrets of Castle Grayskull by transforming into He-Man when he raised his sword and said, "By the power of Grayskull! I have the power!" He-Man and his friends Orko, Man-At-Arms and Teela battled Skeletor and his Evil Warriors in each exciting episode. Everyone will know you are a fan of the classic series that ran from 1983-1985 when you wear this Vintage Logo Masters of the Universe T-Shirt!