The essential episodes of What If...?
Watch these 15 in order and you've got What If...? — each pick states its reason.
- 01
What If... Captain Carter Were the First Avenger?
When Steve Rogers is seriously injured, Peggy Carter becomes the world’s first Super Soldier.
- 02
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.
- 03
What If... The World Lost Its Mightiest Heroes?
Nick Fury struggles to launch The Avengers when candidates are targeted by a serial killer.
- 04
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.
- 05
When The Avengers are infected by a zombie plague, surviving heroes search for a cure.
- 06
Natasha Romanoff and Clint Barton seek to destroy killer-robot Ultron following a cataclysmic event.
- 07
What If... The Watcher Broke His Oath?
The Watcher breaks his oath and recruits heroes from across the multiverse to battle against Ultron.
- 08
What If... Peter Quill Attacked Earth's Mightiest Heroes?
When Ego and a young Peter Quill threaten Earth in 1988, Howard Stark and Peggy Carter form a team.
- 09
What If... Iron Man Crashed Into the Grandmaster?
Tony Stark challenges The Grandmaster, leading to a grand prix-turned-demolition-derby death match.
- 10
What If... Captain Carter Fought the Hydra Stomper?
Captain Carter's mission to save Steve Rogers sets her on a collision course with new enemies.
- 11
What If... Hela Found the Ten Rings?
Hela—stripped of her powers and banished to Earth—comes across a new source of power: the Ten Rings.
- 12
What If... The Avengers Assembled in 1602?
Captain Carter tries to undo the anomaly that strands familiar heroes and villains in the year 1602.
- 13
What If... Strange Supreme Intervened?
Captain Carter discovers the greatest threat to all existence may be closer than she realizes.
- 14
What If... The Red Guardian Stopped the Winter Soldier?
It is 1991, and the Red Guardian takes it upon himself to join a high-profile mission and prove himself to his Red Room superiors. When his antics interfere with the Winter Soldier's own mission to kill Howard Stark, the two Soviet supersoldiers must form an alliance to escape the United States.
- 15
The end of the beginning...














