Gregori was born in the Carpathian Mountains a quarter of a century younger than Mikhail Dubrinsky. Both grew up together as close as brothers. After losing his family to the Turk Wars, Gregori followed Mikhail's lead in quickly establishing order and saving what was left of their people, becoming Mikhail's second in command and bodyguard as well as instrument of justice to their race, hunting the vampire.

He is shorter than most Carpathians but also has much larger muscles than most males of the species. Due to some experiments better left unpursued, his once coal black eyes are now a burning silver.

He was very close to losing his soul while healing pregnant Raven Whitney, so he marked her unborn daughter Savannah, manipulating the outcome of their union even before her birth. He waited until she was twenty-three years old to claim her.