Marc Guggenheim Explains How The Shocking Ezra Miller Crisis Cameo Happened

The Flash's executive producer Marc Guggenheim details how Ezra Miller's epic Crisis on Infinite Earths cameo came to be.

The most surprising cameo in the “Crisis on Infinite Earths” crossover event was without a doubt when Ezra Miller’s Flash showed up with Grant Gustin’s Flash in the Speed Force, during the fourth part of the crossover. Executive producer Marc Guggenheim has since commented on how the epic cameo came to be.

While speaking of the Fake Nerd Podcast Guggenheim spoke about the difficulties of using movie characters in the TV shows.

“There were certain things that we knew were not touchable and the cinematic universe fell into that category…The nice thing about doing something for years is you’re there for all the changes. You’re there for the personnel changes, and you’re there for the philosophical changes and the changes in policy, and this was one of those situations where people changed their minds.”

“I was so glad that they did, even though the change of mind did come after we were wrapped on the whole crossover. So it came very late, but as they say, better late than never.”

Ezra Miller Was Game

Ezra Miller The Flash Crisis on Infinite Earths


Guggenheim later goes on to explain more detail about getting Ezra Miller to reprise his role as The Flash in the “Crisis on Infinite Earths” crossover.

“The funny thing is, once we got the approval, it came together almost easier than any other cameo. I mean, certainly, there were other cameos that were a lot harder to pull off, that required a lot more scheduling creativity or financial creativity or logistical creativity, you name it! This sort of all came together really nice.” For the Miller cameo, it was “series of phone calls and some time at the keyboard.”

Other cameos included Tom Elis’ Lucifer from the Fox/Netflix show Lucifer. This cameo was the most shocking cameo for fans, until of course the Ezra Miller cameo was revealed. Characters also appeared from Batman (1966), Batman (1989), Superman Returns, Titans, and even more.


The “Crisis on Infinite Earths” event had mixed reception from fans. Some fans loved it while others called it a disappointment explaining that some of the cameos were just fan service and served nothing to the plot.

Ezra Miller’s The Flash movie is set to come to theaters on July 1, 2022. While the Crisis on Infinite Earths crossover event will re-air in its entirety this April on the CW network. What did you think of Ezra Miller’s cameo? What do you hope to see in his solo movie? Let us know in the comment section and on our social media!


Picture of Bryce West

Bryce West

Bryce West is a writer/producer and a grad student at the University of Southern Indiana. West created his first television program at the age of 18 titled, The Film Reel. The Film Reel is a movie and TV talk show that has ran from 2019-present on News Channel 15 in Mt. Carmel, IL.