Photo credit should read: Ian West/PA WireDisney has released the trailer for Avengers: Doomsday, giving fans their first look at Robert Downey Jr as Doctor Doom. The blockbuster features an ensemble cast as the Avengers, X-Men, Fantastic Four, Wakandans and New Avengers converge from different universes to face Doctor Doom. Chris Hemsworth returns as Thor in Avengers: Doomsday (Ian West/PA)The trailer then reveals the return of Steve Rogers, played by Chris Evans – former leader of the Avengers, who summons Thor’s hammer Mjolnir. Marvel’s synopsis for Avengers: Doomsday reads: “Universes collide and the Multiverse Saga begins its final chapter in Marvel Studios’ Avengers: Doomsday. Avengers: Doomsday will be released in cinemas on December 18.