Robert Downey Jr. has been cast as Doctor Doom in the upcoming Avengers: Doomsday film. When Marvel Studios head Kevin Feige informed him of the role, the actor responded with characteristic wit, stating he would bring the same excellence to villainy as he had to his iconic heroic performance.

The casting has generated significant enthusiasm within entertainment circles. Downey Jr.'s well-established versatility in balancing humour and dramatic depth positions him well for the complex antagonist, whilst his physical resemblance to Tony Stark may be deliberately leveraged to create thematic resonance and psychological complexity. The Russo Brothers, directing the film, have indicated this element will factor into the narrative.