According to Greek mythology, Hades was the brother of Zeus and Poseidon and ruler of the underworld. Hades was the ancient Greek chthonic god of the underworld, which eventually took his name. In Greek mythology, Hades was regarded as the oldest son of Children : Macaria , Melinoe. In Greek mythology, Hades was the god of the underworld, the kingdom of the dead. When Hades was born, Cronus swallowed him as he had swallowed his she didn't Like it but legend says after a while she fell in love with Hades and.