•  (L-R) Actors Morena Baccarin and Ben McKenzie attend the 'Gotham' press line during Comic-Con International 2016 at Hilton Bayfront on July 23, 2016 in San Diego, California.

(L-R) Actors Morena Baccarin and Ben McKenzie attend the 'Gotham' press line during Comic-Con International 2016 at Hilton Bayfront on July 23, 2016 in San Diego, California. (Photo : (Photo by Frazer Harrison/Getty Images))

Are the City Sirens making their debut on "Gotham" Season 4? It appears likely, especially as the final arc of "Gotham" Season 3 shows some shift in alliances and more chaos begins to unfold.

The villains are beginning to take full form on the show-the Riddler will soon get his costume, the Court of Owls become an even bigger presence in the city and Al Ghul will arrive in Gotham. The growing number of villains pushes the show's young Bruce Wayne further into living his destiny of becoming Batman; however, there are several key villains which the show is still missing out on.

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The City Sirens are a prominent figure in the comics. Although Harley Quinn, Poison Ivy and Catwoman are already confirmed to appear in the movie adaptation of "Gotham City Sirens," there are questions as to whether these femme fatales are going to pop up on TV, considering that Selina Kyle, a.k.a. Catwoman, is already a known fixture on "Gotham."

When asked if the City Sirens will appear in "Gotham" Season 4 somehow, Camren Bicondova told Heroic Hollywood that they have not discussed it yet but it is a possibility in the future.

"I think that eventually it will happen. Selina has been for the past however many months or years not consciously doing it, she has been kind of depending on Bruce in certain aspects," Bicondova said.

Bicondova added that things will change with Selina, however, as she soon realizes that no one else can fill Bruce's spot in her life and that she will need to learn to rely on herself more. "Gotham" already has its TV version of Poison Ivy, and Screen Rant reported that the show is also set to introduce its own version of Harley Quinn by the end of "Gotham" Season 3.

If ever City Sirens pushes through in "Gotham" Season 4, actress Jessica Lucas said there's a chance Barbara Gordon and Tabitha Galvan might take part in the group, although the characters weren't members in the comics. "I think it would be great to have some sort of girl gang going on next season," Lucas teased.

"Gotham" Season 3 returns to FOX on April 24.