Season 3 of Invincible has eight episodes and brings back Steven Yeun as Mark Grayson, J.K. Simmons as Omni-Man, and Sandra Oh as Debbie Grayson. Nine voice actors joined the season, including Aaron Paul as Powerplex, Simu Liu as Multi-Paul, and Christian Convery as Oliver Grayson. This guide covers the principal returning cast and the new performers and roles confirmed by the available sources; it is not a complete episode-by-episode guest-credit list.
Who returns in Invincible Season 3?
The central Grayson family and a broad ensemble of heroes and agency figures return. These actor-role pairings are identified in Amazon’s season retrospective and TheWrap’s cast guide.
| Actor | Character | Role in the series |
|---|---|---|
| Steven Yeun | Mark Grayson / Invincible | The young hero at the center of the series. |
| J.K. Simmons | Nolan Grayson / Omni-Man | Mark’s father, a powerful Viltrumite. |
| Sandra Oh | Debbie Grayson | Mark’s mother. |
| Walton Goggins | Cecil Stedman | Head of the Global Defense Agency. |
| Gillian Jacobs | Samantha “Eve” Wilkins / Atom Eve | A hero with matter-manipulating abilities. |
| Jason Mantzoukas | Rex Splode | A member of the superhero team. |
| Seth Rogen | Allen the Alien | An interstellar ally of Earth’s heroes. |
Amazon’s broader series cast listing also names Zazie Beetz, Chris Diamantopoulos, Zachary Quinto, and Andrew Rannells. The sources cited here do not detail their Season 3 episode appearances or provide the same season-specific role breakdown, so this guide does not treat that broader list as a complete Season 3 credit roll.
Which actors are new in Season 3?
Amazon announced nine performers joining the established voice cast for the season:
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- Aaron Paul
- Simu Liu
- Jonathan Banks
- Kate Mara
- Xolo Maridueña
- John DiMaggio
- Tzi Ma
- Doug Bradley
- Christian Convery
The official material cited here directly confirms three of those actor-to-character pairings. It does not establish the roles of every other new performer, so those assignments are left unspecified rather than inferred.
Aaron Paul as Powerplex
Aaron Paul voices Powerplex, an energy-absorbing villain. His connection to the season’s cast is confirmed in Amazon’s retrospective guide.
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Simu Liu as Multi-Paul
Simu Liu voices Multi-Paul, Dupli-Kate’s twin brother.
Christian Convery as Oliver Grayson
Christian Convery voices Oliver Grayson, Mark’s younger half-brother. Oliver has grown rapidly, making his age and place in the family part of the season’s character context.
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How does the cast fit into Season 3’s story?
Spoilers for Season 3: Amazon describes the season as a clash of philosophies between Mark and Cecil, as Mark faces the consequences of his choices. The heroes also fight 18 multiversal versions of Invincible. Rex Splode sacrifices himself during that battle, and Conquest—a violent Viltrumite voiced by Jeffrey Dean Morgan—arrives afterward. Mark and Eve’s relationship develops over the season.
The season’s eight episode listings name characters including Cecil, Eve, Oliver, Debbie, Nolan, Allen, Rae, and Rex in their summaries. Those descriptions help place the returning ensemble in the story, but they are not a substitute for full episode credits.
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How many episodes are in Invincible Season 3?
Prime Video lists eight episodes. Its catalog page displays episode dates from February 5 through March 12, 2025. Those are the dates shown on that listing; regional catalog presentation can differ.
Quick Recap
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Where are the cast and season details confirmed?
- Prime Video’s Invincible listing provides the episode count, titles, displayed dates, and episode descriptions.
- About Amazon’s Season 3 guide covers adaptation background, story context, and selected new character roles. It also reports that Season 3 was Prime Video’s most-watched animation season of all time and its biggest returning season among adult animation originals; the article gives no audience figure or measurement period.
- TheWrap’s dated cast guide identifies additional returning actor-role pairings.
- Amazon’s cast announcement lists the nine new voice actors.
- Ubisoft’s Season 3 announcement also names the new performers.
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