With the death of Natasha Romanoff in Endgame, the Avengers are without a highly trained assassin. It appears that may change following the upcoming Black Widow movie.
There has never been a rule that there must be a Black Widow in the Avengers, but filmgoers have come to expect it. While some were expecting the Scarlett Johansson film to set Florence Pugh’s Yelena Belova up in some way, it has now been at least partially confirmed.
Speaking with Empire, Black Widow director Cate Shortland said, “[Kevin Feige] realized that the audience would expect an origin story so, of course, we went in the opposite direction. And we didn’t know how great Florence Pugh would be. We knew she would be great, but we didn’t know how great. Scarlett is so gracious, like, ‘Oh, I’m handing her the baton.’ So it’s going to propel another female storyline.”
How Pugh’s Widow will be used remains to be seen. There’s nothing saying she will indeed become an Avenger, but it looks as though she may be floating around the MCU for some time to come.