Henry Cavill has joined the cast of 'Voltron'.The Superman star, 41, is due to lead Amazon MGM Studios' live-action take on the beloved animated sci-fi show ‘Voltron: Defender of the Universe’, which followed five robot lions and their teenage pilots as they attempted to defeat the evil King Zarkon and take over the Galra Empire. While Cavill’s role and exact plot points about the movie are being kept under wraps, The Hollywood Reporter has said principal photography on the project is due to begin this autumn in Australia. The film is set to be helmed by ‘Red Notice’ director Rawson Marshall Thurber, who will also produce the movie alongside Todd Lieberman (Hidden Pictures) Bob Koplar (World Events Productions) and David Hoberman (Hobie Films).The ‘Man of Steel’ actor will also be joined by Daniel Quinn-Toye, who impressed Amazon MGM and the filmmaker with his West End work opposite Tom Holland.