Black Widow

Natasha Romanoff (also known as Black Widow ) is the tretagonist of the Marvel Cinematic Universe.

She is the tritagonist of Iron Man 2, one of the titular main protagonists of The Avengers saga, the deuteragonist of Captain America: The Winter Soldier, a supporting character of Captain America: Civil War and the titular main protagonist of the upcoming film Black Widow.

Background
Natalia Alianova Romanova was born in Russia to unknown parentsOver time, Natasha became the deadly assassin, Black Widow after training in the Red Room. She became a threat to the SHIELD agents, and Nick Fury sent Clint Barton to eliminate her. Instead, he recruited her, and Nick Fury approved. Natalia took the name Natasha Romanoff and developed a long friendship with Clint and become an aunt of sorts to his children.

At another unknown point, Black Widow was tasked to protect someone but the Winter Soldier intervened.

Appearance
Natasha is a tall, attractive woman. She usually has red hair that gradually would change. Recently, Natasha's hair has been dyed blond due to being on the run.

Personality
A woman who had the smallest ego of all her teammates, Natasha was very calm and collected when it came to tough situations. However,, her life before a SHIELD agent was that she was very mysterious and very deadly. Despite being the apparently deadly assassin, Natasha was actually not as deadly as people thought she was, as she was quite reasonable in leaving to the SHIELD agency. She was able to adopt many personalities, due to her being trained in this profession, and was also able to fool others.

Natasha was a very fearless person. However, when it came to Bruce Banner as the Hulk, she was very scared of him, but she was able to control this fear due to her falling in love with him. She was even scared when facing Bucky Barnes (AKA the Winter Soldier), especially after being seemingly fatally injured by him. She was willing to protect many other people, those close to her and even

She has an individual relationship with each of the Avengers. However, her relationship with Thor is uncertain. She was very close with Clint, and had something of a aunt/niece/nephew bond with Clint's children. Over time, she saw Captain America as a friend and was willing to protect Vision against the Black Widow.

Despite not having any superpowers, like Clint or Tony, Natasha is just as strong and powerful as they are and very strong in battle.

Thor: Ragnarok
Natasha appears in video footage when Thor enacts footage of Natasha to turn Hulk back into Bruce Banner.

Captain Marvel
In the mid-credits scene, Natasha is with Rhodey, Steve and Bruce when they are talking about the Decimation. As she begins wondering who was on the other end of Fury's pagers.