text: The Justice League makes a cameo appearance in the first-season finale of Peacemaker (2022), set in the DCEU, with the group consisting of Wonder Woman, Flash, Superman and Aquaman.
  Live-action movies
  Batman, Superman and Wonder Woman appear together in Batman v Superman: Dawn of Justice (2016), although not as a formal team. The Flash, Aquaman, and Cyborg make cameo appearances.
  The Justice League formally appears in Justice League (2017) and its 2021 director's cut. The team is also referenced in several other DCEU films.
  Cultural impact
  Most of the characters that appear in DC Comics' books are set in the same fictional universe, known as the DC Universe. They occasionally make guest appearances in each other's solo books, and more regularly in team books such as Justice League. Such crossovers encouraged readers to buy other books in the DC Comics catalogue, and readers became engrossed not just in the individual characters but in their web of relationships across the broader setting, thereby building brand loyalty. Marvel Comics copied this idea by creating a number of superhero teams of its own, the closest analogue being the Avengers, so as to promote and develop the Marvel Universe. Some readers focused their attention on just one of these two comic book universes, as they were both large and did not overlap. Thus, the superhero fandom developed sub-communities of DC devotees and Marvel devotees.