Black Widow (MCU)

Natalia Alianovna "Natasha" Romanov, better known as Black Widow, is one of the best spies and assassins in the world. Originally an agent of the Soviet agency for foreign intelligence, the KGB; she later became a member of S.H.I.E.L.D., the international counter-intelligence agency. Having extensive mastery in the martial arts and armed with her Widow's Bite, Black Widow was one of S.H.I.E.L.D.'s most talented agents.

Returning Hawkeye
In 2009, Widow was tasked with returning Hawkeye to S.H.I.E.LD. following Mockingbird's failure to do so.

War for Earth
As she escapes from Loki, Widow falls upon Thor fighting a brainwashed Hawkeye. She tries to intervene in the fight but is not close enough. However, when Widow sees Thor preparing a final blow against Hawkeye, Widow shoots Thor in the neck with an electric dart, causing him to fall to the floor in pain. Whilst Thor writhes, Widow knocks out Hawkeye and takes him to safety.

After New York
Pierce warns Widow that if she continues with the expose then every piece of classified information on her, including those she never knew S.H.I.E.L.D. would keep track of, would be leaked to the public, effectively ending her spy career and exposing every despicable act she has ever committed. Widow hesitates and walks away, giving Pierce the impression that she she did not proceed with the leak. However, Pierce later discovers that Widow did in fact trigger the leak.

Age of Ultron
XXXXXX

[END OF BATTLE, STILL IN SOKOVIA] Black Widow agrees with Hawkeye that the Avengers should disband and quits when the rest of the group disagree. Meeting privately with Steve Rogers a few days later, Widow is asked what she thinks should happen next. She tells Rogers that she feels Stark should be held accountable for his actions like they were when S.H.I.E.L.D. collapsed, but she knows that he won't be. Rogers asks where she is going next, and she answers that she is going to find somewhere she belongs.

Appearances

 * Hawkeye
 * Season 1
 * The Wife, the Widow
 * Fortune
 * Enter the Circus
 * Carousel
 * The Barton Bros
 * Iron Man 2
 * The Spy Who Loved Me
 * Captain America: The First Avenger (post-credits scene)
 * The Avengers
 * Captain America: The Winter Soldier
 * The Avengers: Age of Ultron
 * Ant-Man and the Wasp (mentioned)
 * Captain America: The Fallen Son
 * From Russia With Love

Trivia

 * In Captain America: The Winter Soldier, Black Widow wore a necklace with an arrow pendant that was given to her by Hawkeye in his TV series episode XX.

Behind-the-scenes
Black Widow is played by Russian actress Alexandra Kozlovsky, who is actually actually several years younger than the Black Widow character is portrayed in the MCU.