Kadoc Zemlupus is a prominent character in the mobile game and anime series Fate/Grand Order. He is a Master and one of the Crypters, a group of former Chaldea members who become antagonists in the game's 'Lostbelt' storyline. Kadoc is known for his intelligence and strategic thinking, often displaying a cold and calculating demeanor. Despite his antagonistic role, he is portrayed with a sense of vulnerability and self-doubt, adding depth to his character. His relationship with his Servant, Anastasia, highlights his complex personality and motivations.