From Cronus and Rhea came the Olympians&colon; Hestia, Demeter, Hera, Hades, Poseidon, and Zeus. Aquaman freed Poseidon by appealing to Lord Hades. Persephone is goddess of Spring and wife of Hades. Other important Greek deities included Hestia, Hades and Heracles. Theseus chose Helen, and Pirithous vowed to marry Persephone, the wife of Hades. Cerberus is named after the mythological three-headed dog that guarded the gates of Hades. The name is derived from the realm of Hades, the Greek underworld. Persephone was abducted by Hades, who desired a wife. Orthrus bears a close resemblance to Cerberus, the hound of Hades. Odysseus ends his visit with Heracles, who asks about Odysseus' intention in Hades. This is also, in Greek mythology, the place of the cavernous entrance to Hades. Athena and Hermes helped him through and back from Hades. Harry is to help Nicodemus steal something from the vault of Hades. Orfeo is guided by Speranza to the gates of Hades. The word is also occasionally used as a synecdoche for Hades itself.