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The third and final season of the acclaimed animated anthology series What If…? season 3 premiered on Disney+ on December 22, 2024. The show keeps looking at other Marvel Cinematic Universe (MCU) timelines where important events happen differently.
Under Bryan Andrews and Stephan Franck's direction, Matthew Chauncey is the head writer, and this season promises eight gripping daily episodes until December 29. This season introduces intriguing new scenarios and a blend of familiar and new characters as part of MCU's Phase Five.
The story of What If…? Deeply exploring the multiverse in season 3, it features fresh faces from Phase 4 of the MCU mixed with fan-favorite characters. Returning as The Watcher, Jeffrey Wright tells stories of these other worlds. From Agatha Harkness' Trip in Hollywood to The Hulk battling Mech Avengers, the season's episodes offer unusual turns.
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New additions include Natasha Lyonne and Jason Isaacs, as well as other notable voice casts like Hayley Atwell, Anthony Mackie, and Kathryn Hahn.
Full list of voice cast and characters of What If…? season 3
1) Jeffrey Wright as The Watcher
Jeffrey Wright reprises his role as The Watcher, the narrator who guides viewers through the multiverse. His character is pivotal, providing insights and occasionally intervening in catastrophic events.
Wright is known for his performances in American Fiction, Shaft, Westworld, The Batman, and more.
2) Hayley Atwell as Peggy Carter/Captain Carter
Hayley Atwell makes a comeback as Peggy Carter, who changes into Captain Carter upon getting the super-soldier serum. Her character's tenacity and leadership come through the show.
Atwell recently starred in Mission Impossible: Dead Reckoning and voiced Lara Croft in Tomb Raider: The Legend of Lara Croft.
3) Anthony Mackie as Sam Wilson/Captain America
Anthony Mackie does the voice of Sam Wilson, who is now Captain America. This season follows his journey as he fights Bruce Banner's Hulk in a mech suit.
Mackie has starred in Twisted Metal and is set to reprise his role in Captain America: Brave New World role.
4) Sebastian Stan as Bucky Barnes/Winter Soldier
Sebastian Stan voices Bucky Barnes, the reformed assassin turned ally. His interactions with David Harbour’s Red Guardian in episode 3 highlight his character’s complexities.
Stan has appeared in Pam & Tommy, Captain America: The Winter Soldier, The Falcon and the Winter Soldier, The Apprentice and more. He will reprise his role in Thunderbolts.
5) David Harbour as Alexi Shostakov/Red Guardian
David Harbour voices Red Guardian, the Russian super-soldier. His dynamic with Bucky Barnes adds intrigue to the series.
Harbour is mostly known for his performance as Jim Hopper in Stranger Things and for recent Gran Turismo and Thunderbolts appearances.
6) Mark Ruffalo as Bruce Banner/Hulk
Mark Ruffalo’s portrayal of Bruce Banner showcases a new narrative where an experiment goes awry. His duality as Banner and Hulk remains compelling.
Ruffalo has also appeared in Poor Things, Now You See Me, The Avengers, Dark Waters,The Adam Project and more.
7) Kathryn Hahn as Agatha Harkness
Set in Hollywood, Kathryn Hahn's Agatha Harkness veers intriguingly in episode 2. Audiences still find great delight in her mystique and wit.
Hahn’s recent works include Agatha All Along, WandaVision, Glass Onion: A Knives Out Mystery and Tiny Beautiful Things.
Supporting cast and characters
The supporting cast and characters include:
- Oscar Isaac as Moon Knight
- Dominique Thorne as Riri Williams/Ironheart
- Simu Liu as Shang-Chi
- Hailee Steinfeld as Kate Bishop
- Tom Hiddleston as Loki
Additional Supporting Cast
The season’s ensemble includes numerous MCU veterans and new additions:
- Samuel L. Jackson as Nick Fury
- Karen Gillan as Nebula
- Tessa Thompson as Valkyrie
- Michael Rooker as Yondu
- Kumail Nanjiani as Kingo
- Seth Green as Howard the Duck
- Devery Jacobs as Kahhori
- Laurence Fishburne as Bill Foster/Giant Man
- Taika Waititi as Korg
Plot of What If…? season 3
What if...? season 3 delves into alternate universes where well-known Marvel tales play out surprisingly. Viewers are led through episodes that retell famous incidents by The Watcher.
Sam Wilson and a group of Mech Avengers fight Bruce Banner's Hulk in the first episode of the season. Later episodes focus on the Hollywood career of Agatha Harkness and the exciting partnership between Red Guardian and Bucky Barnes.
While seasoned characters like Peggy Carter and Loki make strong comebacks, new characters like Riri Williams, Shang-Chi, and Kate Bishop offer new insights. These original stories highlight the multiverse's limitless potential by fusing humor, drama, and action. Fans are left wondering what will happen after the season's enigmatic finale.
Production and direction of What If…? season 3
Bryan Andrews and Stephan Franck are Marvel Studios Animation's animated series directors. The narratives are now crafted by Matthew Chauncey, the head writer, in place of A.C. Bradley. The production is distinguished in the MCU's Phase Five by emphasizing high-quality animation and storytelling.
Stay tuned for more news and updates on What If…? season 3 as the new year progresses. The movie is streaming exclusively on Disney+.
