Natasha Romanova is Black Widow

Black Widow or Natalia Alianovna "Natasha" Romanova as she is actually called. Natasha is a former Russian spy who is specially trained in hand-to-hand combat. In fact, when Natasha first appeared in Marvel's comic books in 1964, she was still a Russian spy and Iron Man antagonist. She later deserted from the Russian intelligence service and instead became an agent for Marvel's S.H.I.E.L.D. as well as a member of the Avengers.

Black Widow appeared on the screen for the first time in 2010 in Iron Man 2 where she was portrayed by Scarlett Johansson. Scarlet has since played Black Widow in 8 different Marvel movies to finally get her own movie called Black Widow 2021.