It was impossible to determine how many years in the future superheroes would appear in the real world because this was a fictional fantasy world that did not exist in the real world. Superheroes are usually fictional characters in novels, comics, or movies who possess extraordinary abilities and strength to fight against all kinds of threats and difficulties. Although some superheroes had already appeared in reality, such as Iron Man, Captain America, and Spiderman in the Marvel movie universe, there were still many superheroes that had yet to appear. These superheroes may exist in fictional works or may appear in real society at some point in the future. However, because superheroes are fictional characters, the timing of their appearance depends on the preferences and expectations of the writing team and readers.