Marvel Studios officially announced the development of the animated series What If...? as part of the Marvel Cinematic Universe Phase 4.
Marvel Studios President Kevin Feige confirmed the What If...? series would explore alternate realities in the Marvel Cinematic Universe.
The main voice cast for What If...? was announced, including Jeffrey Wright as the Watcher.
The first official trailer for What If...? was released, showcasing various alternative scenarios in the MCU.
Official premiere of the first episode of What If...? on Disney+.
In a reality where Ultron successfully uploads himself into the Vision body and annihilates the Avengers.
Peggy Carter receives the super soldier serum instead of Steve Rogers, becoming Captain Carter.
Instead of Peter Quill, T'Challa is abducted by the Ravagers and becomes Star-Lord.
A zombified infection spreads across Wakanda, leading to a deadly outbreak.
Thor enjoys life as a carefree party lover without Loki's manipulations.
In this universe, Killmonger rescues Tony Stark from captivity, changing Stark's path significantly.
Introduction of the Collector's vast and strange multiverse artifacts and worlds.
The Watcher summons heroes from multiple realities to address a multiversal threat, revealing his role as observer.
