Former Oz and Law & Order: Special Victims Unit star Christopher Meloni is currently talking with HBO to obtain a role in the upcoming fifth season of the network's hit vampire drama True Blood, according to reports.

Former

Former Oz and Law & Order: Special Victims Unit star Christopher Meloni is currently talking with HBO to obtain a role in the upcoming fifth season of the network's hit vampire drama True Blood, according to reports. (Reuters/Jason Redmond)

Meloni's specific potential role hasn't been revealed yet, but HBO said it will be a big one, should he agree to take the job, according to Reuters. Zap2it.com reports that producers would like him to play the role of an incredibly powerful vampire.

If Meloni does sign on for True Blood, he would have his second role ever in an HBO series and would make his return to television. From 1998-2003, Meloni portrayed sociopathic and bisexual inmate Chris Keller on the HBO series Oz and Det. Elliot Stabler on Law & Order: SVU.

The 50-year-old actor will have some time to mull his decision as the fifth season of True Blood is set to premiere next summer. Right now, Meloni is part of two other projects. One is a comedy called Awful Nice, in which Meloni plays a college professor who repairs a relationship with his deadbeat brother; the other is the reboot of the Superman film series Man of Steel, in which Meloni plays Colonel Hardy, according to IMDB.

Awful Nice will be released in 2012 while Man of Steel will be released in 2013.

Other new True Blood cast members will be making their debut in the show's much-anticipated fifth-season. British actress Lucy Griffiths, best known for her role as Marian in the BBC drama Robin Hood, will play series regular Nora, Eric's (Alexander Skarsgard) centuries-old vampire sister, according to tvline.com.  Nora will be working as a double agent within the Vampire Authority.

Tvline.com also reports that a lycanthrope named J.D. will also be debuting, possibly as Alcide's (Joe Manganiello) father. Producers are looking to fill the part with a 50-year-old, physically fit actor.