What If...? (Season 3)

Concludes the anthology and the Watcher's own story, with Captain Carter at the center of the finale.

Season 3 follows classic characters as they make unexpected choices that will mutate their worlds into spectacular alternate versions of the MCU.

1. 1
   What If... The Hulk Fought the Mech Avengers?31m

   Captain America/Sam Wilson must suit up in a colossal mech suit to battle Bruce Banner after an attempt to cure himself of the Hulk goes horribly wrong. Bucky Barnes, Monica Rambeau, Moon Knight, and others must join Sam as his new team of Mech Avengers.

2. 2
   What If... Agatha Went to Hollywood?30m

   On the set of Stark Pictures' first production, the playboy auteur quickly finds himself enchanted by his bewitching lead actress, Agatha Harkness. Little does she know there will be another superpower co-star on the call sheet… Kingo.

3. 3
   What If... The Red Guardian Stopped the Winter Soldier?33m

   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.

4. 4
   What If... Howard the Duck Got Hitched?32m

   Howard the Duck and Darcy Lewis find themselves on an intergalactic pleasure cruise. When dangerous factions from across the galaxy descend to threaten their trip, they must discover their own cosmic powers to withstand the onslaught.

5. 5
   What If... The Emergence Destroyed the Earth?33m

   In a Universe where The Eternals never stopped The Emergence, the birth of an incubating Celestial shatters the Earth. Civilization endures on the rocky remnants of our planet, where Quentin Beck leads an authoritarian regime until freedom fighters recruit Riri Williams on a deadly mission to take him down.