The bogatyr (Russian: богатырь; Old East Slavic богатырь, from baɣatur (Mongolian: Баатар baatar, Modern Turkish: Bahadır) a historical Turco-Mongol honorific) is a stock character in medieval East Slavic legend (byliny), akin to a Western European knight-errant.
Read more about Bogatyr: Kievan Rus', Novgorod Republic, Epic Bogatyrs