What If...? Cast

Jeffrey Wright lends his voice to the character Uatu / The Watcher. Uatu is a powerful cosmic being who observes the events of different realities and remains a neutral observer.

Dominic Cooper voices the character of Howard Stark. Howard Stark is a brilliant inventor and industrialist, known for his work in advanced technology and founding Stark Industries.

Stanley Tucci provides the voice for Dr. Abraham Erskine. Dr. Erskine is a German scientist who developed the Super Soldier Serum, which is used to transform Steve Rogers into Captain America.

Neal McDonough voices the character Timothy 'Dum Dum' Dugan. Dum Dum Dugan is a member of the Howling Commandos and a close ally of Captain America.

Darrell Hammond lends his voice to the character of the Nazi General. The Nazi General is a high-ranking officer in the Nazi army, opposing the forces of good in different realities.

Bradley Whitford brings his voice to the character of Colonel Flynn. Colonel Flynn is a military officer with a significant role in the alternate reality presented in the show.

Isaac Robinson-Smith voices the character of Brick. Brick is a young and resourceful character who plays a role in the events of the series.

Michael Rooker brings his voice to the character of Yondu Udonta. Yondu is a Ravager and a somewhat reluctant mentor to Peter Quill (Star-Lord) in the Guardians of the Galaxy.