Iron Man 4
Iron Man 4 was a planned sequel to 2013's Iron Man 3 and would have been an installment in the Marvel Cinematic Universe.
Plot
The plot is currently unknown.
Why It Was Cancelled
- Robert Downey Jr. expressed interest in making a fourth film and wanted Mel Gibson to direct and he was also interested but the project never prevailed.
- A War Machine spin off was also in the works but it too was cancelled.
- Tony Stark got killed off in Avengers: Endgame.
Results
- The film was cancelled and the Iron Man films are now a trilogy.
- A Disney+ series is in development that is tied to the Iron Man franchise, Ironheart. An Armor Wars series was also in development, but is now being retooled into a feature-length film.