
Ahead of his debut in the MCU’s Thunderbolts in 2025, actor Steven Yeun’s undisclosed superhero character might have been unveiled. Despite joining the superhero franchise in February, the identity of Yeun’s character has been shrouded in secrecy.
Describing his MCU role as “interesting,” Yeun has kept details of his casting under wraps. However, speculations suggest that The Walking Dead star could be portraying Sentry (aka Robert Reynolds), a Marvel Comics superhero with Superman-like abilities, grappling with an internal malevolent alter ego known as the Void.
LOVE IT pic.twitter.com/rfTIXIFyVl
— Rayyan 🇵🇸 (@RayyanTCG) November 17, 2023
Bc he’s not under marvel contract and can talk abt whatever he wants lol
— Sal🫥 (@vfcsal) November 17, 2023
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The creator of The Walking Dead, Robert Kirkman, inadvertently disclosed Yeun’s role in the MCU during a conversation with comic artist David Finch, reports The Direct. Kirkman revealed, “My good friend Steven Yeun is playing the Sentry in a movie.” Finch acknowledged the information, expressing excitement about the upcoming portrayal.
🔗 https://t.co/1OFBrkdGrz
Our MCU and #Invincible discord ⬇️https://t.co/m8Nm6r0uNU
— Culture Crave 🍿 (@CultureCrave) November 17, 2023
Yeah both yellow great cast
— Jim B (@BobRules4038) November 17, 2023
Lol it’s long known he’s playing sentry in Thinderbolts
— Sanatani Batman (@its_a_warning) November 17, 2023
Kirkman further shared that Yeun had recently undergone a costume fitting for the Sentry. He humorously added, “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?”
Robert Kirkman spoiling Steven Yeun as Sentry: What’s Marvel going to do to me?
Kevin Feige:pic.twitter.com/lhzBgw5fiw
— BLURAYANGEL 🦇 (@blurayangel) November 17, 2023
me knowing they will fuck up sentry’s character https://t.co/xwO26IA8Jc pic.twitter.com/Ls0Lr2uS5K
— Cereal Choker (@CrazytheBeat) November 17, 2023
Sucks that it leaked, but Steven Yeun is my goat and sentry is dope
Im hyped https://t.co/3S0gkQgLZe
— Steve 🎥 (@SteveRogers1943) November 17, 2023
Recalling Yeun’s call about the costume fitting, Kirkman recounted, “He said he was at the costume fitting and was like, ‘Aww, crap. I forgot Invincible was yellow and blue.'” This prompted Yeun to jokingly remark on his penchant for portraying superheroes with those specific color schemes, as he currently voices Mark Grayson/Invincible in Kirkman’s Invincible series.

While not an official confirmation, the information shared by Robert Kirkman strongly suggests that Steven Yeun will indeed portray Sentry in the MCU. Sentry is renowned for his superheroic endeavors, and the potential twist of introducing him as a character consumed by the sinister Void adds an intriguing dimension to his portrayal. This unexpected turn could prove to be a captivating element for a character slated to play a significant role in the future of the MCU.
Scheduled to make his debut in Thunderbolts, Steven Yeun’s appearance is eagerly anticipated, with the film set to hit theaters on July 25, 2025.
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