Why did Hugo Weaving not return as Red Skull?

Did Hugo Weaving voice Red Skull in What If?

The Red Skull: Hydra supervillain Johann Schmidt, a.k.a. the Red Skull, has already gone through some recasting in the MCU. Initially played by Hugo Weaving in The First Avenger, the role was then taken on by Ross Marquand for Avengers: Infinity War and Avengers: Endgame.

Is it Red Skull in Infinity War?

In the Marvel Cinematic Universe, the character was played by Hugo Weaving in Captain America: The First Avenger (2011) and by Ross Marquand in Avengers: Infinity War (2018) and Avengers: Endgame (2019).

Who is the red guy at the end of the Avengers?

Feige revealed on an Empire magazine podcast that the “master” in the post credits scene is Thanos. Definitely looks a lot like the image you linked. I thought he was a little more red in the film, but it might have been a trick of the lighting.

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