.Wonder is actually carrying the Russo Bros. back to direct the upcoming two Avengers movies The VergeRobert Downey Jr. Sets Wonder Rebound as Winner von Ruin in 'Avengers: Doomsday' VarietyRobert Downey Jr. To Officially Go Back To The MCU As Doctor Ruin Forbes' Avengers' celebrity Robert Downey Jr. returns to Marvel-- but as Doctor Doom USA TODAYMCU's Doctor Ruin Designated at Last for Avengers: Doomsday, and It's Robert Downey Jr. |SDCC 2024 IGN.