Robert Kirkman has confirmed who Steven Yeun will play in the Marvel Cinematic Universe.

After Yeun rose to fame on The Walking Dead, which was based on a comic book series written by Kirkman, the actor has since been voicing the lead role in Kirkman’s animated series Invincible. Per IGN, Kirkman has now revealed in a YouTube interview with comic artist David Finch that Yeun will be the MCU’s Sentry in Thunderbolts, claiming that the actor had told him personally about it while remarking on his costume’s colors. Yeun’s Invincible character happens to wear a suit with yellow and blue colors, a scheme similar to Sentry from Marvel Comics.

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“My good friend Steven Yeun is playing the Sentry in a movie,” Kirkman said. “Yeah, he called me, he went in for a costume fitting… I hope I’m not… I don’t think this is a spoiler or anything that will get anybody in trouble. I don’t know, maybe. We’ll see. I don’t care. I don’t work for Marvel. What are they going to do to me?”

Suggesting that Sentry will be given a comic book-accurate suit, which has been rumored, Kirkman added, “Yeah, he called me and he said, ‘I just came back from a costume fitting for the Sentry. I guess I only do superheroes that are yellow and blue.’ He said he was at the costume fitting and was like, ‘Aww, crap. I forgot Invincible was yellow and blue.'”

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Yeun’s role has not been officially announced by Marvel Studios, though there were rumors that he’d been cast as Sentry in Thunderbolts, and there had even been fan art made to imagine the casting. That followed separate rumors that claimed Sentry would be a significant part of the Thunderbolts movie. The film was first announced in June 2022 with Jake Schreier set to direct and Eric Pearson writing the screenplay. While Yeun’s role wasn’t revealed, it was announced that the film would follow Sebastian Stan’s Bucky Barnes, Wyatt Russell’s U.S. Agent, Hannah John-Kamen’s Ghost, Julia Louis-Dreyfus’ Valentina Allegra de Fontaine, Florence Pugh’s Yelena Belova, David Harbour’s Red Guardian, and Ola Kurylenko’s Taskmaster. Harrison Ford will also feature as “Thunderbolt” Ross.

After several Marvel movies were recently given delays because of the film industry strikes, Thunderbolts is now currently scheduled to be released in theaters on July 25, 2025.

Source: IGN, David Finch

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