Bartok was an albino vampire bat that belonged to Grigori Rasputin. He became Rasputin's one and true friend. He died of natural causes, when Rasputin soon figured out the true power he desired, that'll keep him immortal, but with a price. Bartok was revived in 2020, when Rasputin finally had found his high henchman Alfred Cleaveland and his wife Kelly Cleveland and needed a spy, while his high henchman rob and steal from both the MACUSA and the Ministry of Magic. Bartok was destroyed during the Battle of the Peterhof Palace, at the hands of Peter the Pyromancer.