Tony Stark (Marvel Cinematic Universe)
First appearing in Iron Man, he is first depicted as an entrepreneur and billionaire who works as a weapons manufacturer contracted to build weapons of mass destruction for the United States Army. He is kidnapped by the Ten Rings, an international terrorist organization, and forced to build weapons for them. He agrees to do so, but secretly creates the first Iron Man suit and escapes. He ultimately defeats the Ten Rings and announces himself as Iron Man to the world. His actions earn the attention of Nick Fury, who approaches him about the Avengers Initiative. In The Incredible Hulk, Stark returns for the first time in the pre-credits scene to talk to Thunderbolt Ross about the initiative. Stark returns again as the main protagonist of Iron Man 2 and Iron Man 3. He appears as one of the co-protagonists in The Avengers, Avengers: Age of Ultron, Avengers: Infinity War, and Avengers: Endgame. Stark appears as the antagonist of Captain America: Civil War and has an additional supporting role Spider-Man: Homecoming, serving as the mentor of Peter Parker.