Geralt of Rivia (Polish: Geralt z Rivii) is a fictional character and the protagonist of The Witcher series of short stories and novels by Polish writer Andrzej Sapkowski, as well as its adaptations, which include film, TV series, comic books and video games. Geralt, one of the few remaining witchers on the Continent, is a traveling monster slayer for hire, mutated and trained from an early age to slay deadly beasts.