Is there a rivalry brewing up between Grant Gustin and Ezra Miller? The two actors play The Flash in different platforms, with Gustin portraying The Flash on TV while Miller is The Flash in DC’s Cinemative Universe.

Miller’s casting was met with controversy, especially since Gustin’s performance is lauded by viewers and critics. Even Gustin’s co-star Tom Cavanagh believes it was a mistake to pick someone else to fill in Barry Allen’s speedster shoes.

Cavanagh said in an episode of Puck Soup that Gustin is an “incredibly skilled talent” and that’s the reason why he plays The Flash in the TV series and “why people like the show.”

“If Zack Snyder were to read him for [‘The Flash’], he would be shocked,” Cavanagh continued. “It’s crazy for a big-time Hollywood director to say ‘that’s not the universe.’ It’s a huge misstep on his part. If you’re a director, and you’re worth your oats, then you should be able to, given an actor with talent, mold him into what you want, and Grant could do that.”

In their defense, Warner Bros. explained that they would like to keep the television and film universes separate from one another to allow creative freedom on both platforms.

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Many members of The Flash TV series fandom were also rooting for Grant Gustin to take the role of the Scarlet Speedster to the big screen. But despite the public clamor, Gustin holds no ill feelings towards Ezra Miller. In fact, he fully supports him for the role.

“I’ve never met the guy, but I think he is a fantastic and interesting actor,” Gustin said in a tweet, as quoted by E! News.

He also asked fans to stop bashing Miller and the entire The Flash movie production.

“Nothing of anyone ‘bashing’ Ezra. I don’t condone that type of behavior (especially on the Internet) and I definitely don’t partake,” Gustin tweeted.

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Meanwhile, Ezra Miller made a cameo appearance as The Flash in Batman v Superman: Dawn of Justice. Aside from his standalone movie, he will also reprise the role in Justice League: Part One.