Ezra Miller's future as the Flash in the DC Extended Universe has been a topic of ongoing discussion, fueled by abuse allegations and legal issues surrounding the actor. Despite the lingering concerns, director Andy Muschietti has expressed his support for Miller, stating that if a sequel to The Flash were to happen and he and his producing partner, Barbara Muschietti, were involved, Miller would continue in the lead role.

In an upcoming episode of The Discourse podcast, set to be released closer to the film's June 16 premiere, Andy and Barbara Muschietti commended Miller's portrayal of Barry Allen. Andy Muschietti stated (via The Playlist), "I don't think there's anyone that can play that character as well as they did... it feels like a character that was made for them."

Barbara Muschietti echoed these sentiments, praising Miller's dedication to the role during the principal photography of The Flash. She described the actor as "brilliant, committed, and professional."