See the “Invincible” Cast Side-by-Side with the Characters They Voice

Michael NiedWed, March 18, 2026 at 1:44 PM UTC

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Steven Yeun as Mark Grayson in 'Invincible' season 4 ; Steven Yeun attends Netflix's "The Rip" New York Premiere at Alice Tully Hall, Lincoln Center on January 13, 2026Credit: Courtesy of Prime; Arturo Holmes/WireImage

Prime Video’s Invincible shows off the dark side of a heroic life.

The animated series — based on Robert Kirkman, Cory Walker and Ryan Ottley’s comic series of the same name — follows 17-year-old Mark Grayson, whose father is the most powerful superhero in the world, Omni-Man.

However, as Mark, who is voiced by Steven Yeun, begins to develop powers of his own, he discovers his father, voiced by J.K. Simmons, may not be as heroic as he thought.

Invincible returned for a fourth season on March 18, and Variety reported a fifth has already been ordered.

As viewers prepare to return to the high-stakes world, here's a look at the characters of Invincible side by side with the actors who voice them.

01 of 09

Steven Yeun as Invincible (Mark Grayson)

Steven Yeun as Mark Grayson in 'Invincible' season 3 ; Steven Yeun attends the Los Angeles Special Screening Of Prime Video's "Invincible" Season 3 at The Culver Theater on February 3, 2025Credit: Courtesy of Prime; Elyse Jankowski/Getty

Yeun takes center stage in Invincible as the lead hero — Mark Grayson, a.k.a Invincible. However, his experience with saving the world takes on a darker edge as he realizes exactly what it might entail.

Speaking to PEOPLE in February 2025, Yeun said that the show hints at the “universal truths of what it means to mentor somebody and be mentored by somebody.”

That same month, he told CGMagazine that the cast have good relationships with one another, even if they don’t get to work together all the time since they have a “shared understanding that [they’re] all contributing to something [they] believe in.”

“Voice acting is really different, but I enjoy it," the actor added about the medium. "I love being in the booth, isolated in my own experience. If anything, voice acting has taught me to embrace a level of shamelessness that I really appreciate."

02 of 09

Sandra Oh as Debbie Grayson

Sandra Oh as Debbie Grayson in 'Invincible' ; Sandra Oh at the TIFF Tribute Awards held at the Fairmont Royal York on September 8, 2024 in TorontoCredit: Courtesy of Prime; Michael Buckner/Variety via Getty

As Debbie Grayson, Mark’s human and non-superpowered mom, Sandra Oh stands out from the rest of the cast, and her humanity grounds the show.

Speaking to The New Zealand Herald in February 2025, the actress noted that her character is “the heart” and “the mother” of the series, and her unique abilities are rooted in embodying those elements.

Asked why her character resonates so strongly, she replied, “What I think is relatable is that those of us who have children know what that’s like, to have to let them go for them to become their own adults.”

03 of 09

J.K. Simmons as Omni-Man (Nolan Grayson)

J.K. Simmons as Omni-Man in 'Invincible' season 4 ; J. K. Simmons attends the premiere of Amazon MGM Studios' "Red One" at Alice Tully Hall, Lincoln Center on November 11, 2024Credit: Courtesy of Prime; Dia Dipasupil/WireImage

Simmons brings the strongest character to life in Invincible — the titular hero’s dad, Omni-Man, an otherworldly Viltrumite who was sent to Earth with nefarious purposes. His heroics hide a darker side, which shocks viewers at times.

Describing the project as iconic, Simmons told GQ in August 2024 that he initially passed on it when he was approached to play a different character, even though he thought it was “really smart and weird and cool.”

“This sounds silly, because it's animated, but I just kind of didn't see myself as the character that they were saying they would want me to play,” he admitted, explaining his decision changed when he was offered the role of Omni-Man, along with the chance to work with Yeun and Oh.

However, he didn’t know “how twisted” his role could be, admitting, "I was just reading the first script, maybe the first two. So, to me, it was another interesting dad character.”

04 of 09

Lee Pace as Thragg

Lee Pace as Thragg in 'Invincible' season 4 ; Lee Pace attends "The Running Man" New York Premiere at AMC Lincoln Square 13 on November 09, 2025Credit: Courtesy of Prime; Jason Mendez/Getty

Lee Pace will make his debut in the show’s fourth season as Thragg, the ultimate villain in the Invincible universe and the leader of the Viltrumites. A teaser introducing the character makes it clear that taking him down is the key goal for heroes, but it’s not going to be an easy job.

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Taking on an iconic role in the franchise was exciting for Pace, who hyped Thragg up in an October 2025 chat with Entertainment Weekly.

"As I was learning more about the story we were setting up, what I saw was a character with a lot of depth and a lot of different extremes," he teased. "He goes through a lot ... I've also never done anything like this before."

05 of 09

Gillian Jacobs as Atom Eve (Samantha Eve Wilkins)

Gillian Jacobs as Atom Eve in 'Invincible' season 2 ; Gillian Jacobs at the 76th Primetime Emmy Awards held at Peacock Theater on September 15, 2024 in Los AngelesCredit: Courtesy of Prime; Gilbert Flores/Variety via Getty

Mark’s love interest and fellow superhero, Atom Eve, is brought to life by Gillian Jacobs in the series. After a near-death experience in season 3, she returns to the show, learning about a new power she possesses.

Speaking to Collider in February 2025, Jacobs admitted that she wasn’t familiar with the source material before getting a chance to join the project.

“When I told people in my life about this show, I have never gotten such a strong, enthusiastic response of people saying like, ‘I love that comic, I'm obsessed with it,’ " she recalled, explaining that she became a fan after signing on and diving into the universe.

She continued, adding, “So I went from not knowing about it to having like, oh, God, we have a high bar. This is a really beloved comic. And I heard that firsthand from people in my life."

06 of 09

Walton Goggins as Cecil Stedman

Walton Goggins as Cecil Stedman in 'Invincible' season 1 ; Walton Goggins at Golden Eve on January 06, 2026 in Beverly HillsCredit: Courtesy of Prime; Gilbert Flores/Penske Media via Getty

As the director of the Global Defense Agency, Walton Goggins’ Cecil Stedman is a polarizing character who has a fraught relationship with Mark.

The trailer for the fourth season hints that Stedman is trying to balance the trauma that the hero experienced in the season 3 finale with his need to keep the world protected.

In April 2024, he told ComicBook.com that a live-action version of Invincible wasn’t in the cards for him after his role in Fallout, saying, “I think I’ve already played an old man. I don’t think I could do that again.”

07 of 09

Matthew Rhys as Dinosaurus

Matthew Rhys as Dinosaurus in 'Invincible' season 4 ; Matthew Rhys attends the 32nd Annual Actor Awards at Shrine Auditorium and Expo Hall on March 01, 2026 in Los AngelesCredit: Courtesy of Prime; Frazer Harrison/WireImage

Matthew Rhys will make his debut in the fourth season of the hit series, and it appears he’s being set up to take center stage in the future. After Variety announced his involvement in a mystery role in July 2025, fans learned that the The Beast in Me star was voicing Dinosaurus.

Dinosaurus is a villain that Mark faces off against. However, those familiar with the original story likely know that the character develops a unique relationship with Yeun’s titular hero.

08 of 09

Christian Convery as Kid Omni-Man (Oliver Grayson)

Christian Convery as Oliver Grayson in 'Invincible' season 4 ; Christian Convery attends the 2026 Children's & Family Emmy Awards at Jazz at Lincoln Center on March 02, 2026Credit: Courtesy of Prime; Arturo Holmes/Getty

As the second child of Omni-Man, Christian Convery’s Kid Omni-Man is one of the youngest heroes.

Convery told ScreenRant in February 2025 that his character had “a lot to learn” after taking things too far in battle. But the actor added that there was space to evolve, saying, “He’s going to develop his journey.”

Continuing, he teased that “he’s going to expand,” adding that he would “hopefully” become “more sensitive.”

09 of 09

Danai Gurira as Universa

Danai Gurira as Universa in 'Invincible' season 4 ; Danai Gurira attends Marvel Studios' "Black Panther 2: Wakanda Forever" Premiere at Dolby Theatre on October 26, 2022Credit: Courtesy of Prime; Axelle/Bauer-Griffin/FilmMagic

No stranger to the realm of heroes thanks to her portrayal of General Okoye in the Marvel Cinematic Universe’s Black Panther films, Danai Gurira is making her Invincible debut in the fourth season.

Forbes confirmed that the actress, who previously worked with Yeun on The Walking Dead, brings Universa to life.

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