Taking inspiration from the comic books of the same name, each episode explores a pivotal moment from the Marvel Cinematic Universe and turns it on its head, leading the audience into uncharted territory.
You can now watch What If...? online on the following streaming platforms in the United States.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | What If… Captain Carter Were The First Avenger? | 2021-08-11 | 31 min |
| Season 1 | Episode 2 | What If… T'Challa Became a Star-Lord? | 2021-08-18 | 32 min |
| Season 1 | Episode 3 | What If... The World Lost its Mightiest Heroes? | 2021-08-25 | 30 min |
| Season 1 | Episode 4 | What If… Doctor Strange Lost His Heart Instead of His Hands? | 2021-09-01 | 35 min |
| Season 1 | Episode 5 | What If... Zombies!? | 2021-09-08 | 30 min |
| Season 1 | Episode 6 | What If… Killmonger Rescued Tony Stark? | 2021-09-15 | 31 min |
| Season 1 | Episode 7 | What If… Thor Were an Only Child? | 2021-09-22 | 33 min |
| Season 1 | Episode 8 | What If... Ultron Won? | 2021-09-29 | 28 min |
| Season 1 | Episode 9 | What If... The Watcher Broke His Oath? | 2021-10-06 | 33 min |
| Production | Brad Winderbaum | Executive Producer |
| Production | Kevin Feige | Executive Producer |
| Production | Louis D'Esposito | Executive Producer |
| Production | Victoria Alonso | Executive Producer |
| Sound | Laura Karpman | Original Music Composer |
| Production | Bryan Andrews | Executive Producer |
| Production | A.C. Bradley | Executive Producer |
| Production | Carrie Wassenaar | Producer |
| Art | Paul Lasaine | Production Design |
| Visual Effects | Ryan Meinerding | Visual Development |
| Visual Effects | Ryan Meinerding | Lead Character Designer |
| Visual Effects | Stephan Franck | Animation Supervisor |
| Sound | Mac Smith | Sound Designer |
| Sound | Scott R. Lewis | Sound Re-Recording Mixer |
| Production | David J. Grant | Co-Producer |
| Production | Evan Jacobs | Finishing Producer |
| Production | Andrew Egiziano | Other |
| Production | Sarah Halley Finn | Consulting Producer |
| Production | Simona Paparelli | Associate Producer |
| Production | Sarah Halley Finn | Casting |
| Production | Jason B. Stamey | Casting |
| Sound | Dave Jordan | Music Supervisor |
| Production | Danielle Costa | Co-Producer |
| Art | Magdiela Hermida Duhamel | Other |
| Art | Kristina Vardazaryan | Art Direction |
| Art | Cynthia Halley | Assistant Art Director |
| Visual Effects | Christian Bouyer | Character Designer |
| Visual Effects | Amelia Vidal | Character Designer |
| Visual Effects | Alejandro Moreno | Character Designer |
| Visual Effects | Ryan Lang | Character Designer |
| Visual Effects | Caroline Ng | 3D Artist |
| Visual Effects | Cortney Armitage | 3D Artist |
| Visual Effects | Erick Sosa | 3D Artist |
| Visual Effects | Nadja Bonacina | 3D Artist |
| Visual Effects | David J. Phillips | VFX Supervisor |
| Visual Effects | Simon Dunsdon | Layout Supervisor |
| Visual Effects | Jorge Zavala | Digital Compositor |
| Visual Effects | Cindy Liu | Digital Compositor |
| Art | Alex Lillie | Concept Artist |
| Art | Armand Serrano | Concept Artist |
| Art | Benoit LePennec | Concept Artist |
| Art | Luc Desmarchelier | Concept Artist |
| Art | Ron Lukas | Concept Artist |
| Art | Roy Santua | Concept Artist |
| Art | Ryan Magno | Concept Artist |
| Art | Sung Choi | Concept Artist |
| Art | Vaneda Vireak | Concept Artist |
| Art | Won Sul Hyun | Concept Artist |
| Art | Adam Liepins | Concept Artist |
| Art | Chris Howard | Concept Artist |
| Visual Effects | A.J. Vargas | Visual Development |
| Visual Effects | Samantha Vinzon | Visual Development |
| Art | Joshua James Shaw | Conceptual Illustrator |
| Art | Adam Ross | Sculptor |
| Crew | Brent W. Hall | Post Production Supervisor |
| Visual Effects | Kristin Derella | VFX Editor |
| Visual Effects | Phelicia Sperrazzo | VFX Editor |
| Sound | Anele Onyekwere | Supervising Music Editor |
| Sound | Tom Kramer | Music Editor |
| Crew | Craig Tanner | Other |
| Crew | Ian McClarren | Other |
| Production | Amanda Lam | Post Production Accountant |
| Production | Nattakarn Kullamart | Other |
| Production | Tracy Lam | Other |
| Production | Kelsey Novak | Other |
| Production | Sasitorn Chitranukroh | Other |
| Production | Kelsey Schneider | Other |
| Production | Morning Star Schott | Finishing Producer |
| Production | Thea Warren | Other |
| Production | Matthew Vogan | Other |
| Production | Harry Butler | Production Manager |
| Production | Claire Titcomb | Production Supervisor |
| Production | Sarah Cave | Production Supervisor |
| Production | Brandon Chau | Production Coordinator |
| Production | Caitlin Walton | Production Coordinator |
| Production | Fran Portillo | Production Coordinator |
| Production | Jon Roth | Production Coordinator |
| Production | Kayley Kemp | Production Coordinator |
| Production | Molly Sotak | Production Coordinator |
| Production | Perry Leong | Production Coordinator |
| Production | Reed Cothron | Production Coordinator |
| Production | Kaleb Kern | Production Coordinator |
| Production | Melissa Encinas | Production Coordinator |
| Production | Brandon Swofford | Production Assistant |
| Production | Napoleon Brewer Corbin | Production Assistant |
| Production | Tatianna Sims | Production Assistant |
| Production | Peter Bertucci | Production Assistant |
| Production | Johnny Cardona | Production Accountant |
| Production | Leanna Marsh | Payroll Accountant |
| Production | Monic Oum | Assistant Accountant |
| Production | Daniella LaGraff | Other |
| Production | Taylor Ehrlich | Other |
| Production | Djinous Rowling | Casting Associate |
| Production | Jordyn Gregory | Casting Assistant |
| Production | Terri Douglas | ADR Voice Casting |
| Production | Courtney Baker | Executive Assistant |
| Production | Eleena Khamedoost | Executive Assistant |
| Production | Heather Benners | Executive Assistant |
| Production | Roderick Flucas | Executive Assistant |
| Production | Alex Scharf | Development Manager |
| Sound | Bill Rudolph | Sound Effects Editor |
| Sound | Alyssa Nevarez | Sound Effects Editor |
| Sound | Cheryl Nardi | Dialogue Editor |
| Sound | Cheryl Nardi | ADR Editor |
| Sound | Matthew Wood | ADR Mixer |
| Sound | Doc Kane | ADR Mixer |
| Sound | Shelley Roden | Foley Artist |
| Sound | John Roesch | Foley Artist |
| Sound | Scott Curtis | Foley Mixer |
| Sound | Nora Kroll-Rosenbaum | Other |
| Sound | Kyle Laporte | Other |
| Sound | Jeff Kryka | Orchestrator |
| Sound | Oleg Kondratenko | Conductor |
| Sound | Brad Haehnel | Scoring Mixer |
| Sound | Shannon Murphy | Music Supervisor |
| Crew | Roy Thomas | Thanks |
| Art | Adrian Barrios | Storyboard Artist |
| Art | Alex Avagimian | Storyboard Artist |
| Art | Alex Chiu | Storyboard Artist |
| Art | Angelo Libutti | Storyboard Artist |
| Art | Aram Sarkisian | Storyboard Artist |
| Art | Ben Choi | Storyboard Artist |
| Art | Dan Andrews | Storyboard Artist |
| Art | David Krentz | Storyboard Artist |
| Art | Erika Shing | Storyboard Artist |
| Art | Francisco Ruiz Velasco | Storyboard Artist |
| Art | Isabella Ye | Storyboard Artist |
| Art | Jarelle Dampier | Storyboard Artist |
| Art | Mari Yang | Storyboard Artist |
| Art | Mark Andrews | Storyboard Artist |
| Art | Min Gyo Chung | Storyboard Artist |
| Art | Noor Rasul | Storyboard Artist |
| Art | Norman Felchle | Storyboard Artist |
| Art | Paul Cohen | Storyboard Artist |
| Art | Peng Liu | Storyboard Artist |
| Art | Rick Newsome | Storyboard Artist |
| Art | Stephen Sawran | Storyboard Artist |
| Art | Todd Harris | Storyboard Artist |
| Art | Vanessa Kwan | Storyboard Artist |
| Art | Yunzhao Zhang | Storyboard Artist |
