Robert Downey Jr is returning to the Marvel Cinematic Universe, but will not reprise his role as Iron Man. He will now be seen playing the Marvel villain Doctor Doom in a new `Avengers` movie titled `Avengers: Doomsday`. This news has, however, left actor Gwyneth Paltrow surprised and she has reacted to it, according to Variety.

Both films will be directed by the Russo Brothers, who previously directed Downey as Iron Man in Marvel`s blockbusters `Captain America: Civil War`, `Avengers: Infinity War`, and `Avengers: Endgame`.