- “Tony? You're being uncharacteristically non-hyperverbal”
- — Natasha
On Earth-1610 Tony and Natasha are both member of the Ultimates (the counterpart of the Avangers) She was originally part of the Ultimates' covert operations ("black ops") team, but with the emergence of the Chitauri threat was subsequently moved to public status after a publicly acceptable background was written for her. She has genetic or cybernetic enhancements making her far better in combat than the average human. After accepting a marriage proposal from Tony Stark, she receives a black suit of Iron Man armor as an engagement present, along with a set of nanites to control the armor.
Romanova is later revealed as a traitor—claiming that she betrayed the Ultimates because she feels that America has turned her country into a collection of drug-runners and prostitutes—responsible for killing Hawkeye's wife and children, revealing Bruce Banner's connection to the Hulk to the public, helping to frame Captain America as a traitor, and collaborating with the Liberators in their invasion of the United States. After she murders Edwin Jarvis and holds Stark hostage in an attempt to extort his fortune, Stark activates the nanites in her bloodstream, freezing her body in place, before knocking her unconscious with a wine bottle. She appears later in an emergency clinic, having cut open her wrists to bleed out the disabling nanites. Hawkeye kills her in revenge for her part in the murder of his family.
By Ultimates 3 #1 a sex tape between Natasha and Stark has been leaked to the public. According to Janet Pym, the tape is of unknown origin and seems to have been professionally done with "close ups". Stark is shown to be in a state of depression over Natasha's betrayal and subsequent death. It is later revealed that one of the Ultrons calling himself Yellowjacket had leaked the tape.
Marvel Cinematic Universe
Iron Man 2
Natasha was sent by Nick Fury to spy on Tony Stark once they realized he was ill. She was placed at Stark Industries as a legal assistant named Natalie Rushman. Tony immediately took an interest in "Natalie," which she used to her advantage to gather intel about him and assess whether he was suitable for membership in the Avengers Initiative.
After Tony's disastrous birthday party, Fury confronted Tony about his situation at Randy's Donuts. There, Natasha, wearing her S.H.I.E.L.D. uniform, introduced her true self to Tony. She gave him a shot of a serum to temporarily reduce the effects of his palladium poisoning, giving him time to work on a cure.
Later, while Tony battled Ivan Vanko's Hammer Drones and James Rhodes, whose armor was controlled by Ivan Vanko, Natasha fought her way through Hammer Industries. She found Vanko's computer and quickly released Rhodey's armor from Vanko's control.
Tony overrode the PA system on the Quinjet Natasha was flying and asked her if she missed him before flying in to help Steve Rogers fight Loki. Natasha and Tony later fought alongside each other during the Battle of New York.
Avengers: Age of Ultron
The two fought alongside each other to retrieve Loki's scepter and in the subsequent battles at the salvage yard and in Sokovia.
Captain America: Civil War
Natasha and Tony sided together on the Sokovia Accords, though for different reasons; Tony believed that the Accords were morally correct, and Natasha simply wanted to keep the team together. They later fought at each other's side at the Leipzig-Halle airport. Natasha, however, betrayed her team in the end and allowed Steve and Bucky Barnes to escape.
Later, at the hospital where James Rhodes was being treated for his paralysis, Tony and Natasha talked with each other. He gave her a halfhearted warning that the government would be coming after her, but denounced their friendship due to her betrayal. The two parted on unpleasant terms.
Natasha, Steve, and Scott Lang tried to convince Tony to look up the possibility of time travel as one last chance to bring back the people who had been dusted by Thanos, but Tony refused as he had settled down. Natasha remarked to Steve and Scott that Tony's refusal was due to his fear.
Tony eventually discovered time travel and was able to create a time machine, making it possible for the Avengers to go back in time and gain all the time stones. While on the mission, Natasha sacrificed her life in exchange for the time stone. While mourning, Tony ask the Avengers if Natasha had a family.
- Tony – “I want one.”
- Pepper – “No.”
- — About Natasha
- “Agent Romanoff. You miss me?”
- — Tony
- Tony – “Focus up. I'm sorry, did I just mishear you or did you agree with me?”
- Natasha – “Oh, I want to take it back now”
- Tony – “No no no, you can't retract it”
- Natasha – “You alright?”
- Tony – “Always.”
- — Loyalty
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On AO3, Iron Widow is the tenth most written ship for Natasha. Fans think that Natasha had been first annoyed with Tony's behaviors, but eventually warmed up to him. They think that Natasha holds Tony in high regard, noting her nod of approval when Tony was bragging on himself in front of Steve. Some also think that Tony was fond of Natasha as he gave only her a nod when she, Steve, and Scott came to visit his house; although Natasha had betrayed him by helping Steve during the Civil War. Fans mentioned that the Avengers had first started with both Tony and Natasha's appearance, but also ended with their death.
- Tony/Natasha tag on AO3
- Tony/Natasha (Avengers Movies) tag on FanFiction.net
- Tony/Natasha (Marvel Comics) tag on FanFiction.net
- Tony/Natasha (Avengers Comics) tag on FanFiction.net
- Iron Man/Black Widow (Avengers Cartoon) tag on FanFiction.net
- In her report on Tony for the Avengers Initiative, Natasha writes "Mr. Stark displays compulsive behavior... prone to self-destructive tendencies. Textbook narcissism."
- Black Pepperony refers to the ship between Pepper Potts, Tony and Natasha
- WinterIronWidow refers to the ship between Bucky Barnes, Tony and Natasha
- Captain America: Civil War
- Ultimates #7
- The Ultimates 2 #2
- Ultimates 2 #8
- The Ultimates 2 #12 (Aug. 2006)
- Ultimates 3 #1
- Ultimates 3 #4
- Iron Man 2
- The Avengers