Mondain is a fictional character from the Ultima video game series, created by Richard Garriott. He is known as a powerful sorcerer and the primary antagonist in the game Ultima I: The First Age of Darkness. Mondain seeks to conquer the world of Britannia and is infamous for his dark magic and ambition. In the game, players must defeat Mondain to restore peace to the realm. His character is significant in the Ultima lore, representing the struggle between good and evil. Mondain's legacy continues to influence the series and its themes of heroism and morality.