MCU Phase 4: Every Single Character Confirmed (So Far)

43. Mason (O-T Fagbenle) - Black Widow

O-T Fagbenle's character in Black Widow appears to be an original - unless he's an updated version of Mason AKA The Agent, who is the son of Phineas Mason, The Tinkerer in the comics. Clearly he can't be the son of the MCU Tinkerer, because the ages don't match up, but it may be that he's that character with a new backstory. In the comics, intriguingly, he's a mercenary who specializes in handling superhumans non-lethally.

In his own words, Mason is "...kind of a fixer for spies and those in the underworld who need a bit of help. He might be a bit more ambivalent but he has a really complex relationship with Natasha." Naturally, that's made lots of people suspect he's her potential love interest, which also probably means he ends up suffering a tragic fate. But we shall see.

We also have an unknown character played by legendary British actor Ray Winstone, intriguingly, but we'll have to wait and see who he's playing for now.