What If...?
“One question changes everything.”
The Watcher, an omniscient cosmic observer bound never to interfere, guides us through fractured timelines where a single altered choice sends Marvel's mightiest heroes spinning into unfamiliar fates. What if Peggy Carter took the super-soldier serum, or T'Challa became a legendary space rover, or the world's saviors turned into its greatest threat? Each animated chapter reinvents a cornerstone of the Marvel Cinematic Universe, honoring its icons while daring to break them. Playful, poignant and occasionally chilling, this anthology mines the infinite branches of the multiverse to ask how much of a hero is destiny and how much is decision.
Seasons
3
Episodes
26
Country
United States of America
Status
Ended
Cast
Jeffrey Wright
The Watcher (voice) · 26 eps
Terri Douglas
Additional Voices (voice) · 25 eps
Matthew Wood
Additional Voices (voice) · 22 eps
Fred Tatasciore
Additional Voices (voice) · 15 eps
Robin Atkin Downes
Additional Voices (voice) · 14 eps
Samuel L. Jackson
Nick Fury (voice) · 7 eps
Hayley Atwell
Peggy Carter / Captain Carter (voice) · 8 eps
Shelby Young
Additional Voices (voice) · 10 eps
Sebastian Stan
Bucky Barnes (voice) · 7 eps
Debra Wilson
Additional Voices (voice) · 9 eps
Benedict Cumberbatch
Doctor Strange (voice) · 6 eps
Helen Sadler
Additional Voices (voice) · 9 eps
Dave B. Mitchell
Additional Voices (voice) · 9 eps
Chris Hemsworth
Thor (voice) · 6 eps
Mark Ruffalo
Bruce Banner / Hulk (voice) · 5 eps
Piotr Michael
Additional Voices (voice) · 8 eps
Kari Wahlgren
Additional Voices (voice) · 7 eps
Josh Keaton
Steve Rogers / Captain America (voice) · 7 eps
Mick Wingert
Tony Stark / Iron Man (voice) · 7 eps
Tom Hiddleston
Loki (voice) · 5 eps
Karen Gillan
Nebula (voice) · 4 eps
Lake Bell
Natasha Romanoff / Black Widow (voice) · 6 eps
Seth Green
Howard the Duck (voice) · 5 eps
Ross Marquand
Infinity Ultron (voice) · 6 eps
Jon Favreau
Happy Hogan / Zombie Happy (voice) · 4 eps
Jeremy Renner
Clint Barton / Hawkeye (voice) · 4 eps
Jason Isaacs
The Eminence (voice) · 4 eps
Josh Brolin
Thanos (voice) · 3 eps
Michael Ralph
Additional Voices (voice) · 6 eps
Kat Dennings
Darcy (voice) · 4 eps
Reviews
TMDB
8/10
★★★★★★★★★★
Rate and review this show
Log in →
Trailer
Official trailer
What If...?
Where to Watch
Streaming
Disney Plus
PBS Episode Guide
1
What If... Captain Carter Were the First Avenger?
When Steve Rogers is seriously injured, Peggy Carter becomes the world’s first Super Soldier.
2
What If... T'Challa Became a Star-Lord?
The rough-and-tumble space pirates known as the Ravagers abduct T’Challa instead of Peter Quill.
3
What If... The World Lost Its Mightiest Heroes?
Nick Fury struggles to launch The Avengers when candidates are targeted by a serial killer.
4
What If... Doctor Strange Lost His Heart Instead of His Hands?
A grief-stricken Doctor Strange uses the Eye of Agamotto in a dangerous effort to change the past.
5
What If... Zombies!?
When The Avengers are infected by a zombie plague, surviving heroes search for a cure.
6
What If... Killmonger Rescued Tony Stark?
An American soldier called Killmonger rescues Tony Stark when his Humvee is attacked in Afghanistan.
7
What If... Thor Were an Only Child?
Thor, who never learned to be a good hero, throws an out-of-control intergalactic party on Earth.
8
What If... Ultron Won?
Natasha Romanoff and Clint Barton seek to destroy killer-robot Ultron following a cataclysmic event.
9
What If... The Watcher Broke His Oath?
The Watcher breaks his oath and recruits heroes from across the multiverse to battle against Ultron.
Gallery
Similar
Fantastic Four: World's Greatest Heroes
2006
⭐ 7.5
Armorsaurs
2025
⭐ 7.2
Captain Planet and the Planeteers
1990
⭐ 6.9
Harvey Birdman, Attorney at Law
2000
⭐ 8
Batman Beyond
1999
⭐ 8.2
Eyes of Wakanda
2025
⭐ 6.2
Batman: The Brave and the Bold
2008
⭐ 7.6
X-Men '97
2024
⭐ 8.7
Justice League Unlimited
2004
⭐ 8.3
Spidey and His Amazing Friends
2021
⭐ 7.1
Marvel's Guardians of the Galaxy
2015
⭐ 7.2
Justice League Action
2016
⭐ 7.2
Create your profile for free
Save favorites, rate movies, play trivia games and discover your next favorite movie.
Join free →
