Ray Fisher was reportedly only offered a cameo role in The Flash film. Debuting in 2016's Batman V Superman: Dawn of Justice as Victor Stone/Cyborg, the actor and his character were properly introduced the year after in Justice League. Since then, he hasn't appeared in any DCEU movies, with his future uncertain without a confirmed standalone movie.
This wasn't the case, however, when Fisher was brought on board for Warner Bros.' superhero franchise. Cyborg was once slated for his own solo adventure following an intended pivotal part in Justice League. Not only was Victor's role in Justice League greatly reduced, but he was also basically treated as a McGuffin rather than an actual key player. Now, aside from the upcoming four-part Snyder Cut set to hit HBO Max next year, Fisher's next potential reprisal of the cybernetically reconstructed hero would be in Ezra Miller and Andy Muschietti's upcoming DCEU film - although it won't be as big of a role.
In a new report from The Wrap, Fisher was only offered a cameo role in The Flash. No additional details were given regarding what his role would be, but the outlet revealed, citing anonymous sources who have personal knowledge of the matter, that Fisher began his tirade against Justice League interim director Joss Whedon on the heels of being offered the cameo back in late June. Earlier this month, news broke out that despite the ongoing drama, Fisher is still in talks for an appearance in The Flash although nothing substantial has been divulged to the public about the matter since then.
In late June, Fisher came out on social media to divulge the alleged toxic behavior of Whedon on the set of Justice League. This was supposedly enabled by then-DC Entertainment president Geoff Johns and former Warner Bros. co-president of production Jon Berg. All three accused have denied claims, but Fisher is relentless with people backing him up, like co-star Jason Momoa whose support is pivotal in keeping this issue at the forefront of the public's consciousness. Following Fisher's initial bombshell, he continues to provide information regarding his claims as things were also happening behind closed doors with Warner Bros. ordering an investigation regarding the matter. The latest update from the actor further complicates the situation as he accuses current DC Films head Walter Hamada of covering up the issue.
While the aforementioned article does not explicitly link Fisher's accusations with only being offered a small role in The Flash, that's what the story implies. It insinuates that the actor was motivated to go after Warner Bros. after only being offered a cameo in Miller's standalone movie. Considering that both Fisher and Momoa have exposed the studio's supposed PR attempts to cover up the issue, chances are that the former would write this off as another way to discredit him and his story. In any case, Fisher typically responds to updates regarding the whole snafu like this rather quickly, so it's best to hear what he has to say before making any judgments.