- “That shield doesn't belong to you. My father made that shield”
- —Tony to Steve
While Stark was growing up, he was told of the legends of Captain America and was amazed when they found his body frozen in a block of ice. They first met when the revived Cap awoke and noticed his situation had drastically changed. He immediately asks Tony Stark—in the form of Iron Man—where he was.
Earth-3490 is a universe that appeared in Dark Reign: Fantastic Four Vol 1 #2 as an alternative universe where the civil war ended differently. In this universe, the civil war was adverted because the female version of Tony Stark: Natasha Stark and Steven Rogers were romantically involved with each other and later got married. In this universe, Stony is canon.
During Tony's childhood, his father, Howard, would constantly talk about the great Captain America, so as to inspire Tony to do great things in life. However, this greatly annoyed young Tony Stark, who felt inferior to Captain America in his father's eyes. When Fury informs Stark of the Avengers Initiative he learns that Captain America is alive. They meet for the first time in Stuttgart, working together to subdue Loki and succeed. Tony commented on Rogers' fighting skills and in true Stark mode mocks Captain America.
Once the full team is assembled at S.H.I.E.L.D.'s Helicarrier and working to decode Loki's sceptre, Steve and Tony's personalities clash, mainly due to Tony's reckless nature masking his insecurity, which Steve sees right through, but feels can endanger the team, such as Tony attempting to provoke Dr. Banner into transforming. They almost get into a fistfight, Steve saying that Stark is not a true hero, who will "lay down on the wire and let the other guy crawl over him" and Tony recants that the only reason Rogers is special is the Super Soldier Serum. They are interrupted by a brainwashed Hawkeye's attack and the subsequent threat of the Hulk.
They are forced to work as a team, which they do quite well and it alters their perspective on one another. Steve tries to console Tony following Coulson's death at the hands of Loki. Both Stark and Rogers helped to defeat the Chitauri. Rogers gave out orders and instructed Stark to take to the skies and take out more Chitauri. As an attempt to stop a bomb, Stark enters the portal where the Chitauri were. However, Rogers ordered the portal to be closed after there was no response from Stark. Luckily, Stark returned to Earth to a smiling Rogers who informed him that they won. After the battle, Stark and the rest of the Avengers went to the Shawarma Palace where they ate silently.
The Avengers are helping Thor locate Loki's sceptre, whilst working to dissolve Hydra cells. Tony is insecure about Captain America being the leader, but accepts it. Tony's fear of causing the death of his friends and teammates leads him to try and create an A.I. combatant in secret, with the help of Bruce. Tony and Steve disagree on the measures Tony is taking.
- “Every time someone tries to win a war before it starts, innocent people die. Every time”
- —Steve tries to dissuade Tony
- Pepperstony refers to a trinogamous relationship including Pepper Potts.
- Stark Spangled Banner refers to a trinogamous relationship including Bruce Banner.
- Stuckony refers to a trinogamous relationship with Bucky Barnes
- Superhusbands refers to Steve and Tony as a married couple
- Superfamily refers to a timeline where the couple have adopted Peter Parker