The producers of the Fox drama series “Gotham” have been hiring new actors to join the cast for Season 2. It was inevitable for some of the Season 1 regulars to fall through the cracks. Apart from Fish Mooney (Jada Pinkett-Smith), who kicked the bucket in the show, detectives Allen and Montoya have also been dropped as series regulars.

TV Line’s Michael Ausiello reports that detective Crispus Allen (Andrew Stewart Jones), and his partner Renee Montoya (Victoria Cartagena) are no longer regulars for Season 2 of “Gotham.” The pair played key roles in the first half of the “Batman” spinoff, but they fell off the radar later into the season.

The two characters suspected the show’s main protagonist, Jim Gordon (Benjamin McKenzie), of being a dirty cop. They investigated him until he was able to prove that there are many other dirty cops and politicians in Gotham City, but he isn’t one of them. They eventually took Jim’s side but were hardly seen towards the end of the season.

Despite the two not being renewed as series regulars, Batman-dedicated site Caped Crusades believes that they may return in Season 2, but only in a limited capacity. After all, Gordon will be needing all the help he can get. The coming season has already been dubbed “Rise of the Villains,” and Gordon will have some iconic “Batman” villains to contend with.

In the latest trailer released by Fox, the Joker (Cameron Monaghan) makes an appearance alongside Tigress (Jessica Lucas). They appear to have taken over Arkham Asylum, which has been a central place of interest in the series both for Gordon and the young Bruce Wayne (David Mazouz).

Gordon may have lost two allies for the coming season, but luckily, he still has his partner Harvey Bullock (Donal Logue) by his side. Screen Crush also reports that Morena Baccarin has been promoted as a series regular, playing the role of Gordon’s girlfriend, Dr. Leslie Thompkins.

“Gotham” Season 2 premieres on Monday, Sept. 21, at 8 pm EDT on Fox.