But that movie was fun for all ages.

He-Man started out as a Conan action figure until the toy company actually watched the Milius movie.

This rumor isn't neccessarily true; the creator of the He-Man toy line says he was already working on this line before the Conan contract was signed.

The original plot to He-Man was that he lived in a post-apocolyptic nuclear war of an advanced planet, reducing the world to its primitive state with some of the technology still being around.

All of the original action figures came with minicomics that told stories involving the characters. In the earliest comics, He-Man is a wandering barbarian on Eternia, a world dealing with the aftermath of a Great War that has devastated the civilizations that once reigned, but has left behind fantastical machinery and weapons. The events of the Great War opened a rift between dimensions, which allows the evil warlord Skeletor to travel to Eternia, and he has now set his sights on the ancient Castle Grayskull, the 'fortress of mystery and power'. Whoever attains control of Grayskull will gain the power to become Master of the Universe. To prevent Skeletor from achieving his goal, He-Man has been given special powers and weapons by The Sorceress (referred to as 'The Goddess' in early stories, except in her debut appearance in whiich she is shown, the one and only time, to have green skin) and sets out to defend the castle from Skeletor. He-Man is supported by several heroic allies, such as Man-At-Arms, the Eternian master of weapons, and Teela, the adopted daughter of Man-At-Arms. Skeletor manages to find one half of the Power Sword, a great weapon which is itself the key to Castle Grayskull. He-Man has been given the other half by The Sorceress, and must prevent Skeletor from linking the two halves to gain access to the castle. To distinguish them from the TV cartoon-influenced minicomics that were released to tie-in with the TV series, this first version of Eternia has been dubbed 'Mini-eternia' or Mineternia.

There is an enduring urban legend about the so-called "Conan toy line". The story is that the Mattel Toy Company originally intended to base an action figure line on Conan the Barbarian, the pulp fantasy character created by Robert E. Howard which at the time was the lead in several popular series produced by Marvel Comics and due to be the subject of a major movie. However, after viewing the film, the Mattel executives despaired at the thought of promoting a children's toy with ties to a film featuring such graphic sex and violence. Thus they gave their doll blonde hair and re-dubbed him "He-Man". The legend is unverified but persistent, and most likely false since the first He-Man action figures were produced in 1981, a year before the first Conan film. Roger Sweet, the originator of He-Man, asserts that the He-Man/Masters Of The Universe concept definitely was not an outgrowth of Conan. The He-Man concept, later renamed the Masters Of The Universe, was originated and developed by Roger Sweet in late 1980. Later, that initial concept was followed by the original comics by Donald F. Glut. The Conan license had been dropped by Mattel months before the He-Man concept was begun. At that time, the barbarian fantasy theme, later applied to the He-Man/Masters concept and line, was broadly visible notably in Frank Frazetta and Boris Vallejo barbarian fantasy art - not specifically from Conan.