By December, high pre-release ticket sales and positive reception for "Aquaman" had convinced Warner Bros. to begin developing a sequel. In January 2019, Warner Bros. confirmed development, with intentions for Wan to return as director. The following month, David Leslie Johnson-McGoldrick, co-writer of the first film, signed on as screenwriter. In March, Safran said the film will explore the other Seven Kingdoms of Atlantis. Jason Momoa will have a larger creative role in the sequel, having written the story while on-set the first film, and pitched the "mapped out" story to Warner Bros., who were receptive. Patrick Wilson and Yahya Abdul-Mateen II will reprise their roles as Orm Marius / Ocean Master and David Kane / Black Manta, respectively. Production is expected to begin in early 2021, for a scheduled released date of December 16, 2022. Warner Bros. Pictures and DC Films have a variety of DC films in varying stages of development:  In October 2014, Johns explained that DC's approach to their films and television series would be different to Marvel Studios' cinematic universe, stating that their film universe and TV universes would be kept separate within a multiverse to allow "everyone to make the best possible product, to tell the best story, to do the best world." Geoff Johns and Jon Berg were appointed by the studio to co-run the DC Films division and oversee creative decisions, production and story arcs in order to create a cohesive overarching plot within the films. Johns left his position in June 2018 to start his own studio where he will take on a greater hands-on role with film media as a producer and screenwriter. However, he remained with the studio as a co-chairman. Berg was replaced by Walter Hamada as the president of DC Films in January 2018. After the successful release of "Wonder Woman" (2017), DC Films decided to deemphasize the shared nature of the franchise. The DC Extended Universe was retroactively established to have connections to The CW's Arrowverse continuity via the concept of a multiverse, during Part 4 of the "Crisis on Infinite Earths" crossover. Ezra Miller reprised his role as Barry Allen in a cameo appearance alongside Grant Gustin's version of the same character. During their conversation, Miller's Barry Allen gets the idea to call himself "The Flash" from his alternate self and even mentions "Victor". However, despite his cameo, the episode does not confirm the designated Earth for the DCEU characters.