Before The Flash, the last time we saw Ezra Miller’s version of the Fastest Man Alive was in 2017’s Justice League. (Aside from brief cameos on the CW Flash series, and Peacemaker of course.) Yes, we saw an extended cut of Justice League in 2021, but they filmed all of that footage years prior. Six years have passed since the League was formed, and it’s alluded to that a similar amount of time has passed in the in-universe timeline. In some ways, The Flash is a de facto Justice League sequel. So which of the main Leaguers do we see in the final film? Actually, a surprising amount, aside from the title character himself. Let’s go through the Justice League roll call, outside of our titular lead hero.
The Bruce Wayne of Barry Allen’s reality, played by Ben Affleck, is still an active member of the Justice League. His darker-hued costume from Batman v Superman and Justice League has been replaced by one that’s blue and grey. It’s reminiscent of the one from the comics during the ‘70s and ‘80s. It seems this Batman is more of a superhero and less of a vigilante. We see him as he helps stop a terrorist group from releasing a deadly virus. This is definitely a Dark Knight who’s not afraid to appear in daylight.
Special mention: It seems Batman’s right-hand man, Alfred Pennyworth, played once more by Jeremy Irons, is the Justice League’s “man in the chair.” We’re not sure if that qualifies him as a League member, but he’s at least an honorable mention.
As far as we know, Superman is still a member of the Justice League during the events of The Flash. They reference the Man of Steel several times. However, Alfred reminds Barry that he’s currently too busy to lend him a hand in his current predicament. When Alfred says this, the camera pans to a TV showing Superman stopping a natural disaster somewhere. Sadly, we only see him from the back, cape flowing, so no Henry Cavill cameo. Although Cavill does appear via stock footage in the Speed Force time bubble. But Superman is definitely still a Leaguer. He’s just a very busy and in-demand member.
Wonder Woman appears in a cameo during the terrorist attack on Gotham City in the film’s opening action sequence. When all hope seems lost, and it looks like Batman and Flash are losing, Princess Diana shows up with her magic lasso and saves the day. It’s a very brief appearance by Gal Gadot, but she proves she’s the League’s MVP, and then flies away. Interestingly, even though Diana realized she could fly in Wonder Woman 1984, and flies in The Flash, she seemed to have forgotten this power in BvS and Justice League.
Aquaman is mentioned several times as a Leaguer, but there is no sign of Arthur Curry until the post-credits scene. When Barry returns from changing reality, we see him out at a bar with Jason Momoa’s King of Atlantis Arthur has a hard time handling all these multiverse shenanigans being told to him, and gets totally plastered. Not only is Aquaman in this film, but also his father, lighthouse keeper Tom Curry (Temuera Morrison), makes an appearance in the altered timeline. In that scene, he confirms to Barry that he never married an Atlantean princess and fathered Arthur. But he does have a dog named Arthur. Who did not appear to have any powers. (That we know of).
Although Victor Stone gets a mention a few times, specifically when Barry Allen is trying to find him in the altered timeline, we don’t see him at all. If he’s still a League member, it’s not explicitly clear, but they imply that he is. Given Cyborg actor Ray Fisher’s extremely harsh feelings about Warner Bros. over his treatment on the original Justice League, this is perhaps not very surprising.
As far as we can tell, the League didn’t recruit a single new member between Justice League and The Flash. And Barry does confirm that years have indeed passed since then. Despite Bruce and Diana saying the Justice League meeting table had “room for more” at the end of Justice League, as far as we can tell, no Martian Manhunter, Green Lantern, or Hawkgirl ever joined up. It remains a Magnificent Six. Well, a Magnificent Six plus Alfred.