Changes are ahead for the X-Men-inspired, in-development Fox series "Hellfire." Showrunners and co-creators Evan Katz & Manny Coto have exited the project to work on another franchise Fox series, the recently announced "24: Legacy," as reported Friday by THR. Additionally, writers Patrick McKay and John D. Payne, who developed the series with Katz and Coto and were slated to script the pilot, have also left the show.

Despite the shifts, THR's report states "Hellfire" is still a priority for Fox, saying the network wants to get it "completely right." The show is not likely to go to pilot this season.

"Hellfire" is based on the Hellfire Club, a villainous group created by Chris Claremont and John Byrne during their legendary X-Men run, and first introduced in 1980's "Uncanny X-Men" #129. According to the official description, the show stars "a young special agent who learns that a power-hungry woman with extraordinary abilities is working with a clandestine society of millionaires -- known as 'The Hellfire Club' -- to take over the world."

If "Hellfire" makes it to series and "Gotham" remains on Fox, it'll make the network the only channel to have both Marvel and DC Comics-based live-action shows, as THR notes. "24: Legacy," Katz and Coto's new project, is a successor to the hit Fox series that ran from 2001 to 2010 (with a follow-up series in 2014) and has a pilot order at Fox. It will feature an entirely new cast.