Fans were surprised when Ezra Miller was picked to fill The Flash’s shoes over Grant Gustin in Zack Synder‘s upcoming movie, Justice League.

ZACK SYNDER EXPLAINS WHY EZRA MILLER CHOSEN AS THE FLASH

Snyder took some time to explain why he never had Gustin in his head to reprise his TV character for the big screen.

“I just don’t think it was a good fit,” he told the New York Daily News. “I’m very strict with this universe, and I just don’t see a version where … that [tone is] not our world.”

Fans can assume that Synder was referring to the dark and somber world of DC Comic films, opposed to The CW’s Flash that is a bit more lively and comical.

“Even if Grant Gustin is my favorite guy in the world and he’s very good, we made a commitment to the multi-verse [idea],” Snyder continued, “so it’s just not a thing that’s possible.”

Miller recently spoke with EW about his new role and how it will differ from the TV show: “Well, [first] it’s going to be a movie,” he said. “I’d like for it to be an exploration of a human being, a multi-dimensional human being, to speak. … I hope to realize him as a person, and I think what’s most exciting for me in superhero mythologies is when we feel the humanity of someone who is heroic — or the heroism of someone who is a flawed, deeply human person.”

After the announcement was made that Miller would be in the red suit, Gustin was thrilled the fellow actor was picked. “I fully support Ezra Miller as Barry Allen and the Flash on the feature side of DC. I’ve never met the guy, but I think he is a fantastic and interesting actor,” he said on Twitter in January.