First unleashed on audiences as a cartoon and toy line in the early '80s, Masters of the Universe centers on Prince Adam, a benevolent monarch on the planet Eternia, who utilizes magic and super-science to become He-Man and battle forces of evil led by a would-be despot named Skeletor.
A previous live-action feature film, starring Arrow's Dolph Lundgren, was released in 1987 and is generally dismissed as not only bad, but almost completely untrue to the source material.
In the ten years that rumors of a reboot have been circulating in Hollywood, the film has changed hands a number of times, with directors including John Woo, McG, and Jon M. Chu rumored to be involved along with writers like Chris Yost (Thor: Ragnarok), Steve Tisch and Jeff Wadlow (Kick-Ass) attached as writers.
McG exited in April, with Goyer named to rewrite the screenplay at that time -- an interesting twist of fate, since McG was one of the filmmakers reportedly courted for Superman in the years before Goyer's Man of Steel reboot got traction.
Goyer wrote the most recent draft of the script, which has been in development hell since about 2015. The film is planned for a December 18, 2019 release.