Bryan Andrews is the director of all twenty three episodes of What If...?.[1]
He also was a storyboard artist on Iron Man 2, The Avengers, Thor: The Dark World, Guardians of the Galaxy, Avengers: Age of Ultron, Ant-Man, Doctor Strange, Guardians of the Galaxy Vol. 2, Avengers: Infinity War, Captain Marvel and Avengers: Endgame.