He-Man and the Masters of the Universe is an American animated television series produced by Filmation based on Mattel's successful toy line Masters of the Universe. It made its television debut in 1983 and ran until 1984, consisting of two seasons of 65 episodes each. Reruns continued to air in syndication until 1988, then moved to USA Network, where it aired from September 1989 to September 1990. The show, often referred to as simply He-Man, was one of the most popular animated children's shows of the 1980s and has retained a heavy following to this day.

He-Man and the Masters of the Universe is a modern remake of the 1980s series of the same name, animated by Mike Young Productions, produced to coincide with Mattel's revival of the Masters of the Universe franchise eleven years after its previous attempt. It aired on Cartoon Network.

Unlike the previous He-Man series, set on the futuristic planet of Primus, this version sought to return to the roots of the storyline and provide broader explorations never reached in the first series, including origins for each character, and some first time animated debuts of familiar toyline faces. The series also brought back several writers from the original series, such as Larry DiTillio.

While the remake is mostly different from the original, it does have a few similarities. For example, Prince Adam transforms into He-Man when he says "By the power of Grayskull" followed by "I have the power!" (later episodes feature a chorus singing He-Man's name during the scene change). It also features "scene change" sequences, but only the one involving the Sword of Power was taken from the Filmation series; all the others were created just for this series, plus the sequences occur less frequently than on the previous series.

In a distant and mystical land, wimpy Prince Adam leads the life of royalty. Unknown to all but a few close friends/allies, Prince Adam is actually a hero, the mighty He-Man. Together with his friends, (such as Teela; her father, a man-at-arms; mysterious Orko and his mighty friend/horse substitute Battle Cat), He-Man battles the evil Skeletor and his minions for control of the world, and, more importantly, for the control, power and "honor of Greyskull," the mysterious castle from which He-Man derives his powers. Written by Jason A. Cormier

Prince Adam is the son of King Randor and Queen Marlena, the royal rulers of the planet Eternia. What the King and Queen and his friend do not know is Adam is the most powerful man in the universe known as "He-Man", a mighty warrior, who with the use of his weapon, the sword of Greyskull, and with help from his companions, loyal soldier Man-At-Arms, his daughter Teela, the lovable Orco and He-Man's pet tiger Battlecat, He-Man fights the evil Skeletor and his henchman who bid to rule Eternia and discover the secrets of Greyskull, the mysterious castle where He-Man discovered the sword of Greyskull and received his special powers. Written by Daniel Williamson

He-Man And The Masters Of The Universe (2002) premiered on Cartoon Network on August 16, 2002. Eternia is a land of myth, sorcery and advanced technology where epic heroes accomplish remarkable deeds, strange creatures roam the land, and malevolent enemies wreak havoc. Deep within Castle Grayskull lies the repository of universal knowledge hidden long ago by the Elders of Eternia. He-Man and the Masters of the Universe defend Castle Grayskull and all of Eternia from the tyrannical Skeletor and his Evil Warriors. Written by Anonymous