Tom Hiddleston and Chris Hemsworth are among the Marvel stars appearing in Avengers: DoomsdayMarvel took a rather novel approach to announcing the cast of its next star-studded Avengers movie, Doomsday.Six years on from the double-punch of Infinity War and Endgame – which saw stars from across the Marvel Cinematic Universe sharing the screen, in what came to be playfully referred to as the “most ambitious crossover event in history” – the studio is about to begin production on the next Avengers movie.To get fans excited, Marvel put together a five-and-a-half-hour live-stream on Thursday afternoon, during which the A-listers in the cast were announced, including MCU greats and a few surprise returning faces.