There’s a lot to be excited about with Avengers: Doomsday: the Russo Brothers are returning, the Multiverse saga is coming to an end, and, most importantly, Robert Downey Jr. is coming back to the MCU. Downey Jr.’s return, this time playing the beloved Marvel Comics villain Doctor Doom, was the big reveal at Marvel Studios’ Hall H panel at last year’s SDCC. Marvel Studios are renowned for their secrecy on big upcoming projects, but Downey Jr.’s new role feels extra secretive. While the actor himself remains tight-lipped about the role, the Russos have spilled some details about the Oscar-winning actor’s preparation to play Doom.