Robert Downey Jr. has said he is enjoying playing Doctor Doom in the upcoming Marvel films more than he did his signature role as Iron Man, explaining that the villain's perspective allows him to "really observe" the unfolding action rather than always being at its centre. The comment offers an early glimpse into how the actor is approaching his return to the Marvel Cinematic Universe, this time as one of its most notorious antagonists rather than as one of its founding heroes.

Downey Jr. suggested that stepping back as Doom gives him a different vantage point within the ensemble, joking that the other characters seem to regard him with suspicion, saying "I guess they're all mad at me or something." Full details of the film's plot and Downey Jr.'s specific approach to the character have not been disclosed.