Avengers: Doomsday production and character details

Initial promotional details for the film ‘Avengers: Doomsday’ highlighted the appearance of the character Sentry, played by Lewis Pullman. A LEGO set release provided a first look at the character’s yellow-and-blue costume, while Robert Downey Jr. appeared at San Diego Comic-Con wearing a jacket featuring runes that fans decoded as messages such as “Revenge” and “Justice.” Subsequent reports indicated that the Sentry may have a reduced role in the film. Industry insiders suggest the Russo Brothers may have trimmed the character’s screen time to prevent him from overshadowing the central ensemble, potentially limiting his presence to the film’s final battle sequence. Speculation regarding the cast has intensified following social media activity from Jeremy Renner. A cryptic Instagram post featuring a close-up of his Hawkeye costume and the character’s theme music has led fans to believe he may appear in a cameo capacity. This follows previous reports that Disney is conducting additional photography to incorporate various high-profile cameos into the production. While Renner had stated in October 2025 that he was not slated for the upcoming Avengers films, his recent activity has fueled renewed interest in his return, with some rumors suggesting a potential appearance in ‘Avengers: Secret Wars.’ Renner previously noted that while a second season of the Disney+ series ‘Hawkeye’ was an original concept, he declined an offer for the project due to a significant reduction in compensation, expressing frustration over whether the lower pay was related to his recovery from a 2023 snowplow accident. Separately, Renner has been confirmed to reprise his role as Clint Barton for a new theme park attraction, ‘Avengers Infinity Defense’, at Disney California Adventure, scheduled to open in 2028. This attraction is expected to feature several MCU veterans, including Chris Hemsworth, Anthony Mackie, and Robert Downey Jr.