Being Human
Aidan Turner plays the dark and handsome Mitchell who, in contrast to George, has the gift of the gab and is very popular with the ladies. He's a vampire who has been struggling to go cold-turkey from the blood he so desperately craves. Now, in the wake of the vampire leader, Herrick's death, Mitchell must appease an out of control vampire world - can he find a way to lead by example?
The Irish-born Aidan Turner recently played Ruairi on the Ireland-based drama The Clinic. He has also appeared in an episode of the Showtime series The Tudors. Turner is set to star as Rosetti in the BBC miniseries Desperate Romantics, which is scheduled to air in the UK later this year.
George
Russell Tovey is the lovable George, battling with his double identity as a mild-mannered hospital porter who for one night a month is transformed into a flesh-hungry, predatory werewolf. This season George is coming to terms with the fact that he has Herrick's blood on his hands, and a girlfriend who knows his horrific secret.
Actor Russell Tovey rocketed to international acclaim with his role as Rudge in the West End and Broadway productions of the play The History Boys and its subsequent film adaptation. He is best-known to BBC AMERICA viewers as Budgie, Gavin and Smithy's mate on Gavin & Stacey. He has also appeared as a midshipman in the Doctor Who episode "Voyage of the Damned", guest-starred as Marcus Johnstone on Ashes To Ashes, and played John Chivery in an adaptation of Charles Dickens' Little Dorrit.
Annie
(Annie is a ghost who haunted the house that she and her fiancé, Owen shared while she was alive. At the end of last season, she turned down entering through the door of death in order to help Mitchell who had been injured, but doing so will definitely impact her current state. The good news is, her confidence is at a peak, and she's determined to stand up and be counted in the real world.
Actress Lenora Crichlow trained with the YoungBlood Theatre Company in London. Her best-known role is Maria "Sugar" Sweet in the British television series, Sugar Rush. She also appeared as Cheen in the Doctor Who episode "Gridlock".
Nina
Nina is a tough senior nurse who fell hard for George, unaware that he was hiding a dark secret. Their relationship has had its ups and downs, but now Nina has gotten much more than she bargained for when George inadvertently scratches her during a transformation and passes his werewolf curse onto her.
Actress Sinead Keenan appeared in the Irish comedy series The Cassidys back in 2001. She also currently stars in the British sitcom Moving Wallpaper as naïve personal assistant Kelly Hawkins. She also appeared as Addams in the Doctor Who episode The End of Time, Parts One and Two.
Lucy
Lucy and Mitchell met while working at the hospital and they became romantically involved. However, is Lucy really what she seems? And what will happen when her true identity is revealed?
The British-born Lyndsey has appeared in the feature film The Hours, and in the HBO series, Rome.