Scarlett Johansson first played Natasha Romanoff in 2008's Iron Man and bid farewell to the role over a decade later when Black Widow sacrificed herself to help save the universe in Avengers: Endgame.
One of the most emotional moments in Avengers: Endgame was the scene between Clint Barton and Natasha Romanoff on the planet Vormir. To obtain the Soul Stone, one of them needed to sacrifice the other ...