[WARNING: This article contains SPOILERS for Suicide Squad]
If there was any doubt that Suicide Squad was shaping up to be the biggest party of the DCEU so far, this news should do it. As if it wasn't enough that stars like Will Smith, Margot Robbie, Jared Leto and Viola Davis were being called upon to bring the villains of the DC Universe to life, fans had their minds blown a year ago when it was revealed that Batman himself would also be appearing - presumably as part of the flashbacks showing how Joker and Harley Quinn wound up divided, with one being pressed into service on the eponymous Squad.
Now, it looks like another member of DC's big screen Justice League will also be making a cameo. After images released during late marketing implied, one other member of the Squad will apparently be given some time to show how they wound up in Belle Reve prison. And, for fans of DC Comics, it's no surprise that Central City's guardian angel hand-delivered one of his stranger Rogues into the waiting arms of Amanda Waller.
Among the many new split-second shots from the recent Comic-Con trailer for Suicide Squad was one depicting Captain Boomerang being sent flying backward towards the camera, surrounded by lightning, in what appeared to be a bank vault. For fans of the comics, it didn't take long to realize that David Ayer was likely showing that The Flash was already hard at work catching some of his famous foes, with Boomerang being among the most unpredictable and dangerous members of his Rogues Gallery.
The moment seemed too much of a spoiler to report on alone, assuming that the blue lightning would be nothing but a fun cameo for fans to decipher on their own. Now, thanks to an official cast listing (courtesy of Fandom) it seems confirmed that Ezra Miller, not just his CG blur will be making an appearance as Barry Allen-- or, more specifically, as The Flash. Again, impossible to know if it's a substantial cameo or literally a split-second appearance, but either one is sure to be a treat for Justice League fans eager to see the DCEU building itself through sprinkled scenes in every movie therein.
The actual listing may be something of an 'order of appearance' hint, as well, with Deadshot (Smith) leading the list, followed by a number of military officials and prison guards. It may not be wise to put too much into the order, but with Jai Courtney's Boomerang and Miller's Flash listed one after the other, it's possible Boomerang's actual introduction may include not just his capture, but the hero who accomplished it. Why else would he seem particularly enraged and stunned to be in a Belle Reve prison cell?
Suicide Squad is scheduled to arrive in theaters on August 5, 2016; Wonder Woman is slated for release on June 2, 2017; followed by 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 is currently without a release date.