Poseidon

Poseidon was the god of the sea and earthquakes in Greek mythology. (TV: Planet of Fire) He was a son of the titan Kronos, whom he succeeded as the god of Atlantis. (TV: The Time Monster)

By one account, Poseidon was one of the Olympians who lived on the planet Olympus. When Prometheus returned after escaping his imprisonment, he asked Aphrodite whether Poseidon still lived, and she replied that he did. (COMIC: The Life Bringer!)

The Temple of Poseidon was built in Atlantis, where an image of the god was enthroned. The Atlanteans called Poseidon the King of the Ten Kings. The temple was destroyed by Kronos 527 years later, along with the rest of the city. (TV: The Time Monster)

Romans adopted Poseidon into their pantheon under the name of Neptune. (PROSE: Byzantium!)

Besides Zeus, he was the only one with power equivalent to Hades. Hermes impersonated him long enough for Persephone to summon the real one. Poseidon then expelled Hades from Earth, sending him back to the Underworld. (PROSE: Deadly Reunion)

In some versions of the Medusa story, she wasn't always ugly. She was a beautiful nymph with golden hair. When Poseidon fell in love with Medusa, Athena became jealous and turned her into a Gorgon. (TV: Eye of the Gorgon)