Fans of the MCU will recognise Anthony Mackie as the superhero Falcon, who in the comic book series, takes over as Captain America after Steve Rogers' retirement.
Mackie made his first appearance as Falcon in 2014's Captain America: The Winter Soldier. He's reprised his role in Avengers: Age of Ultron, Ant-Man, Captain America: Civil War, and Avengers: Infinity War.
Mackie will also star in the upcoming Avengers: Endgame.
In terms of Black Mirror's next instalment, Charlie Brooker has suggested that the new series will continue to experiment with the odd, rogue optimistic episode.
Hinting at more episodes like 'San Junipero' and 'Hang the DJ', Brooker said: "We’re doing more optimistic episodes and stories, rather than just dystopian and negative ones. We want to keep the show interesting for us."
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