Warner Bros. and DC doubled down on their all-in approach to world-building with their Extended Universe, introducing a slew of characters with their Batman V Superman follow up Suicide Squad. Future Justice League member The Flash/Barry Allen (Ezra Miller) appeared briefly in both films, and with The Flash having played a pivotal role in DC's Multiverse - a fact reflected by the upcoming Flashpoint-inspired storyline of the TV show - perhaps it's no wonder rumors abound about who might show up in The Flash's solo outing.
Miller is currently shooting Justice League in London, where he teased the (far-fetched?) idea of meeting his TV counterpart in the Speed Force. Aside from the report that The Flash could begin shooting as early as next year, we've also heard the rumor that Cyborg (Ray Fisher), introduced in memorable fashion in Batman V Superman, is set to appear opposite the Scarlet Speedster.
The Flash's director Rick Famuyiwa (Dope) took to Twitter to personally respond to Cyborg's rumored appearance. See below for Famuyiwa's response.
— Rick Famuyiwa (@RickFamuyiwa) August 18, 2016
Naturally, there is no way Famuyiwa is about to outright confirm anything about The Flash's plot... but it should be noted that #SaysWho is not exactly a denial. In fact, we can actually answer Famuyiwa's cheeky question: DCEU producer Deborah Snyder is where we heard this from, that's who. Snyder previously provided a fairly substantial glimpse into the "camaraderie" between Ezra Miller and Ray Fisher, making it sound like Cyborg might have a significant role to play in the film.
Given the evident DCEU strategy of having plentiful character crossovers along with an all-at-once approach to world-building (Batman V Superman may as well have been subtitled Justice League 0.5), it would be odd if at least one (or more) Justice League members didn't show up in The Flash. With Cyborg being a lesser-known quantity to more casual fans, it makes sense to give Fisher a fair amount of screen time in advance of his own solo outing, still scheduled for release in 2020.
While it seems unlikely that Famuyiwa would be able to concretely confirm or deny anything about The Flash at this point, his teasing reply to the report tells us that we probably shouldn't rule it out. Given the outsize role Cyborg played in the original Flashpoint comic book storyline - essentially leading that universe's version of the DC superheroes and ably filling the moral void left by the absent Superman - it isn't hard to imaging Miller's version of Barry Allen needing some guidance from someone around his age, and who might be struggling to understand his powers.
Suicide Squad is in theaters now. Wonder Woman opens on June 2, 2017; Justice League on November 17, 2017; Aquaman on July 27, 2018; an untitled DC Film on October 5, 2018; Shazam on April 5, 2019; Justice League 2 on June 14, 2019; an untitled DC film on November 1, 2019; Cyborg on April 3, 2020; and Green Lantern Corps on July 24, 2020. The Flash, the Batman solo movie and Man of Steel 2 are currently without release dates.
Source: Rick Famuyiwa