NBC unveiled details on their upcoming occult detective comic book series Constantine at today's TCA (television critics association) press tour - stay tuned for more details on that. Executive producer David S. Goyer (The Dark Knight trilogy, Batman V Superman) was available to answer questions post-panel, where he said that it was possible that additional DC character series may spinoff from the show.

"The intention is that we have DC's occult universe open to us and the fact that we had Doctor Fate's helmet in the pilot is an indication that we're going to be doing that. We're introducing another character from the DC universe within the first eight or nine episodes as well."Of course we know that Zed, from the Hellblazer comics, will be added to the cast early on as a series regular, with Angelica Celaya set to play the role . This additional DC character will be added in a recurring role, according to Goyer, who says they are going to potentially bring in multiple characters that aren't necessarily found in Hellblazer, stressing again, the "whole occult world" of DC is open to them. It was indicated that he may already be developing an idea for an additional series that may use Constantine to introduce the character. When asked which character he'd love to adapt next, Goyer coyly said, "We'll see, maybe some of them will roll out in Constantine."In a follow-up interview Constantine Daniel Cerone revealed to our own Eric Goldman that the character in question is none other than The Spectre."Look, I’m just bringing you in on the early creative discussions," Cerone said. "It might happen, it might not. It’s just the point you’re catching us at. Right now, episode five is off on outline. Within the context of episode five, we had a need for a police officer who sees that supernatural evils exist. Right there, okay, that’s an opportunity to introduce a DC character. So we talked to our DC representatives and we’re like what if we make this character Jim Corrigan, who goes on the become The Spectre. For those who don’t know, Jim Corrigan is a police officer who kind of takes the law into his own hands… he ends up dying and is reincarnated as The Spectre. So it’s a perfect opportunity for us, because we can name this character Jim Corrigan and within our story, for the general viewer, that works, because now Constantine has a friend on the force. For the comic book fan, 'My god, that’s Jim Corrigan!' And we can get back to that character and can slowly develop that character and who knows, maybe there’s an opportunity in the future to even see the origin story unfold within the framework of our TV series. It creates opportunities and creatively you just have to go in and lay that groundwork in and try and let it unfold naturally. So we’re in the midst of approvals on that, but that’s one idea we’re exploring right now."So will we be seeing The Spectre get his own series? Well as Goyer said, if Constantine takes off then "the sky's the limit." The producer did emphasize that his intent was to "launch Constantine and make it a success and get a second season so that we can keep digging into these great characters and stories."The first season is loosely based on the American Gothic storyline, but they hope to delve into more.Goyer has previously said that he felt it was more than possible to have the same DC character appear in both a DC film franchise and then again - played by a different actor - on a television series. In an interview with IGN last year, Gayer stressed that, " Smallville was running while Bryan Singer's Superman came out, and no one had a heart attack over that." As to whether seeing these characters on the show would preclude their inclusion in future films, Goyer again said, "There's been a decision that it's okay to cross-promote these characters and that the audience can take it." As to whether he would like to see the same actor play the role in both a series and a film, he said, "I think that's a headache, but..."When asked if it's in some ways easier to adapt comics for television, Goyer quipped that he hoped that he'd adapted comic characters for films with some success, but did say that due to the serialized nature, they do lend themselves to television.

Constantine is set to debut on NBC this October. We will keep you updates as details emerge.Roth Cornet is an Entertainment Editor for IGN. You can follow her on Twitter at @RothCornet and IGN at Roth-IGN Eric Goldman is Executive Editor of IGN TV. You can follow him on Twitter at @EricIGN , IGN at ericgoldman-ign and Facebook at Facebook.com/TheEricGoldman