Sonja - Rhona Mitra
Sonja is the daughter of the powerful Vampire Elder, Viktor. Beautiful and brave, her nightly patrols defend the Coven from the hoards of ferocious werewolves. Despite her father's hatred for the Lycan race, she has fallen in love with the Lycan slave, Lucian. She battles between the desire to fulfill the responsibilities that come with her lineage and her willful nature. Because of her love for Lucian, she is sympathetic to the enslaved Lycans' plight.
Viktor - Bill Nighy
One of three ruling Vampire Elders, Viktor is a haughty, ostentatious Vampire overlord nearly 1,000 years old. Like most Vampires, he has a severe loathing for Lycans but also a fascination with their unique strengths. Through slavery and torture, he has created a small but mighty force of enslaved Lycans. Despite his best efforts to govern the Coven, the Council members have begun to question his leadership.
Tanis - Steven Mackintosh Deceptive and conniving, Arnaud Tanis serves the Elders as advisor and historian of the Covens. His desire for power, wealth and status lead him to do nearly anything to stand in Viktor's good favor. Often tasked with managing the strong-willed Sonja, he discovers the secrets held in the dark corridors beneath the castle.
Lucian - Michael Sheen
Enslaved as a baby, Lucian has only been able to imagine the full extent of his Lycan powers. In the evolution from werewolf to Lycan, Lucian feels the responsibility of the Lycan race resting on his shoulders. At the same time, his love for the vampire, Sonja, complicates his desire for freedom from the Vampires.
Raze - Kevin Grevioux Lucian discovers Raze's amazing bravery and strength as he rescues him from near-certain death. A deep friendship grows between the two men. Raze sympathizes with the Lycan struggle for independence but doesn't yet know how far he is willing to go to support Lucian.
Danny McBride and Dirk Blackman & Howard McCain