British star Idris Elba is in negotiations to join the cast of Amazon MGM Studios and Mattel Films' live-action feature film "Masters of the Universe". Led by Nicholas Galitzine, the project is based on Mattel's famous toy line that spawned a successful animated TV series in 1983 as well as a 1987 film, starring Dolph Lundgren as He-Man.

According to entertainment news outlet Variety, Elba is in discussions for the role of Duncan aka Man-At-Arms. He joins the cast which also includes Camila Mendes as Teela and Alison Brie as Evil Lyn. While plot details are being kept under wraps, it is known that the story follows Prince Adam of Eternia, who transforms into the muscular He-Man. "With the help of his magical Power Sword, the hero is tasked with defending his home planet from the evil sorcerer Skeletor.