The Famous Russian Mystic in Drifters he serves The Black King.
Hailing from the small village of Pokrovskoye, Grigori Efimovich Rasputin was a Siberian peasant who allegedly possessed the power to cure the sick and predict the future. His ability to heal Alexei, the only son of Nicholas II and Alexandra Feodorovna, earned him the undying devotion of the tsaritsa and, consequently, the scathing animosity of Russian high society. The resentment of the Russian nobility towards Rasputin eventually claimed his life on December 29, 1916, when they successfully killed the "mad monk" at long last, albeit with much difficulty.
The powers he has been endowed with in this world are currently unknown; however, thus far, he and Anastasia, like Joan of Arc and Gilles de Rais, are rarely seen without one another's company.