king Pelias was a major character in the story Medea. Pelias was the adversary of Jason, and also was the king who had both of his daughters turned on him by Medea. This is not the only Greek mythological story king Pelias appears in, however. "Pelias was one of the mythical kings that appeared in the stories of Greek mythology; indeed, Pelias was a king who appeared in one of the most famous tales of Ancient Greece, the story of Jason and the Argonauts."