Marvel Studios has released the first full trailer for Avengers: Doomsday, offering fans their clearest look yet at the next major chapter in the Marvel Cinematic Universe before this week’s San Diego Comic-Con. Joe Russo and Anthony Russo are returning to direct the feature film, which is scheduled to open exclusively in theaters on Dec. 18. Downey’s transformation into Doctor Doom is the trailer’s defining reveal, marking his first major MCU role since Tony Stark’s sacrifice in Avengers: Endgame. Avengers: Doomsday is widely viewed as one of Marvel Studios’ most ambitious productions, with the Russo brothers returning after directing Avengers: Infinity War and Avengers: Endgame. Take a look at the ‘Avengers: Doomsday’ trailer: HERE.