Barry Allen played by Ezra Miller saved the world in Zack Snyder’s Justice League. But he is officially not called “The Flash”. After appearing in a small role in Batman v Superman: Dawn of Justice and Suicide Squad in 2016, Barry Allen was given a chance to shine along with the fellow Justice League founding members in the Snyder Cut.
While fighting Steppenwolf, Barry tapped into the Speed Force to rewind time by a few moments and save the Justice League. But despite his best efforts, he has not been able to earn the official superhero moniker. Superman is very well-known in the DCEU and the whole world knows his name. The same applies to Gotham vigilante Batman. Batman has been an urban myth for decades along with Arthur Curry or Aquaman. He also became a living legend before Justice League assembled for the first time.
The Snyder Cut marks the first mention of “Cyborg” when Diana Prince describes Victor Stone and also the mention of “Wonder Woman”, curiously, from an amazed Barry Allen. Barry Allen got his “Flash” title during Arrowverse’s Crisis on Infinite Earth’s crossover. It revealed that Barry Allen got his first experience with various realities when he first met a multiverse version of himself, Grant Gustin’s Flash.
In this brief encounter, Barry Allen says, “I’m also The Flash”. This caused DCEU’s Barry Allen to have a realization about the name. He fought alongside Justice League and discussed the idea of a multiverse with Cyborg. But he is still a beginner in superhero matters at this point. Snyder Cut confirmed that Barry Allen has done more than just pushing people and running away. He is skilled enough for saving Iris West from a car crash and rewind time for saving his teammates without taking any credit.
But it is his speed that keeps him from becoming famous. Iris was aware that he saved her. Security cameras cannot capture his heroic actions. Even Justice League didn’t realize that he saved them from certain doom. His Speed Force lighting is a sign that an entity was present for some time. But witnesses could see a flash of lightning with no one attached to it. This can be a reason for the general public to call him “The Flash” and for Lex Luthor and Amanda Waller to come up with a similar codename. But this is not the case.
Barry will definitely get an official superhero name when he faces a big threat by himself. The fact that he heard “The Flash” for the first time through DC’s multiverse can be an important plot point in Andy Muschietti’s The Flash. Zack Snyder’s Justice League served the first adventure of Barry Allen as a hero. But the official name might come in his first solo story.
Here’s the official Synopsis for Zack Snyder’s Justice League:
“In ZACK SNYDER’S JUSTICE LEAGUE, determined to ensure Superman’s (Henry Cavill) ultimate sacrifice was not in vain, Bruce Wayne (Ben Affleck) aligns forces with Diana Prince (Gal Gadot) with plans to recruit a team of metahumans to protect the world from an approaching threat of catastrophic proportions. The task proves more difficult than Bruce imagined, as each of the recruits must face the demons of their own pasts to transcend that which has held them back, allowing them to come together, finally forming an unprecedented league of heroes. Now united, Batman (Affleck), Wonder Woman (Gadot), Aquaman (Jason Momoa), Cyborg (Ray Fisher) and The Flash (Ezra Miller) may be too late to save the planet from Steppenwolf, DeSaad and Darkseid and their dreadful intentions.”