7 A-List Actors You Forgot Voiced Marvel Characters

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As a huge MCU fan, it’s amazing how certain actors became their characters. Robert Downey Jr. wasn’t just playing Tony Stark, he was Tony Stark, and when he left, it felt like losing a piece of pop culture. The same thing happened with Chris Evans and Captain America – he really defined the moral center of the whole universe for ten years! And Chadwick Boseman’s T’Challa meant so much to so many people, it went way beyond just a movie role. Seeing the same actors for over 30 films, with all the marketing and box office success – over $30 billion worldwide! – really cemented these connections. Now, when I think of these heroes and villains, I can only picture those specific actors, and I think a lot of fans feel the same way.

Voice acting is unique. Unlike on-screen performances, even incredibly talented and famous actors often don’t receive the same level of recognition for their voice work. This means the history of Marvel animation and supporting roles in the MCU is full of award-winning stars whose performances went largely unnoticed – not because the quality wasn’t there, but because audiences didn’t see their faces; they were portraying characters through animation and special effects.

7) Clancy Brown as Surtur (Thor: Ragnarok)

For forty years, Clancy Brown has been one of Hollywood’s most recognizable voices, thanks to memorable roles in films like The Shawshank Redemption and Highlander, and countless hours of animation work, including the iconic Mr. Krabs in SpongeBob SquarePants. In the 2017 hit Thor: Ragnarok, he voiced Surtur, the powerful fire demon whose prediction of Asgard’s doom is central to the story. While Surtur appears mostly at the beginning and end of the film, Brown’s booming voice made him a truly terrifying cosmic force. Thor: Ragnarok earned $854 million worldwide, meaning a huge number of people heard Surtur speak without realizing it was Clancy Brown. This illustrates how effective voice acting can make even famous performers seem anonymous.

6) Ron Perlman as The Hulk (Iron Man)

I always think of Ron Perlman and immediately picture him as Hellboy or Clay Morrow from Sons of Anarchy – those roles really showed what a versatile and powerful actor he is. But, did you know he voiced both Bruce Banner and the Hulk way back in the 1994 Iron Man animated series? It was part of that Marvel Action Hour block with Fantastic Four, and honestly, he brought such a commanding presence to both sides of that character. It’s a bit of a hidden gem in his career, especially considering how famous he became later on. It’s easy to forget now, but he was the voice of those iconic characters for a lot of us growing up!

5) Neil Patrick Harris as Spider-Man (Spider-Man: The New Animated Series)

Neil Patrick Harris became widely known for playing the witty and self-deprecating Barney Stinson on How I Met Your Mother, a role he played for ten years and which earned him several Emmy nominations. This success built on his early fame from Doogie Howser, M.D.. In 2003, he also voiced the main character in Spider-Man: The New Animated Series, a visually striking but short-lived animated show on MTV. Unlike the traditional hand-drawn cartoons of the 90s, this series used completely computer-generated animation and was aimed at teenagers and young adults. Because it only lasted one season and aired on MTV instead of a major network, the show quickly faded from view, and with it, many people forgot Harris’s performance as Spider-Man.

4) Mark Hamill as Hobgoblin (Spider-Man: The Animated Series)

Mark Hamill is world-renowned for playing Luke Skywalker in the Star Wars films, and he’s also considered one of the greatest voice actors of his generation, largely thanks to his iconic role as The Joker in the DC animated series. However, his work as the Hobgoblin in Spider-Man: The Animated Series often gets overlooked. Hamill brought the same dramatic intensity that made his Joker so memorable to this unpredictable Spider-Man villain. Despite his celebrated voice acting career, this Marvel role doesn’t often come up in discussions of his work, which is a shame because it’s a performance that deserves more recognition within Marvel animation history.

3) Jennifer Connelly as Karen (Spider-Man: Homecoming)

Jennifer Connelly is an acclaimed actress, having won an Oscar in 2002 for her work in A Beautiful Mind. That’s why her role in the Marvel Cinematic Universe is so interesting – it was surprisingly understated. In Spider-Man: Homecoming, she provided the voice for Karen, the AI assistant in Peter Parker’s suit, created by Tony Stark. Audiences didn’t even know it was her, as she wasn’t seen on screen. It’s notable that her husband, Paul Bettany, previously voiced the AI JARVIS in the Iron Man movies and later played Vision in the Avengers films. Connelly brought a soothing and supportive quality to the role of Karen, and the fact that such a talented actress remained uncredited highlights how effectively the MCU kept her identity a secret.

2) Djimon Hounsou as Black Panther (Black Panther)

Djimon Hounsou earned Academy Award nominations for his roles in In America and Blood Diamond, proving his talent long before superhero movies became so popular. In 2010, he voiced the Black Panther in an animated series, making him the first well-known actor to play the character on screen. This was years before the live-action Black Panther film starring Chadwick Boseman made the character a worldwide sensation. Interestingly, Hounsou later joined the Marvel Cinematic Universe in 2014, playing Korath in Guardians of the Galaxy. This means he was part of the MCU before most people even remembered his earlier, groundbreaking work as the voice of Black Panther.

1) Jon Hamm as Iron Man (Marvel’s MODOK)

Jon Hamm is best known for playing Don Draper on the hit show Mad Men, a role that won him a Golden Globe and made him a popular leading man on television. Many were surprised when, in 2021, he voiced Tony Stark in Marvel’s MODOK, a stop-motion animated comedy series for Hulu. This version of Stark was more laid-back and comical than the one seen in the Marvel Cinematic Universe, but Hamm still brought his natural charisma to the character. Though Marvel’s MODOK had 10 episodes, Hulu ultimately canceled it. Sadly, the show’s unique stop-motion animation, adult humor, and the relatively unknown nature of the MODOK character meant it didn’t get the audience it deserved, and Hamm’s performance went largely unnoticed.

What Marvel voice acting performance by a famous actor or actress was the most unexpected? Share your thoughts in the comments and join the discussion on the ComicBook Forum!

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2026-03-17 20:12