- Siberian peasant monk who was very influential at the court of Czar Nicholas II and Czarina Alexandra.
- any person who exercises great but insidious influence.
- Grigori Efimovich (ɡriˈɡɔrij jɪˈfiməvitʃ). ?1871–1916, Siberian peasant monk, notorious for his debauchery, who wielded great influence over Tsarina Alexandra. He was assassinated by a group of Russian noblemen
