Though not shown, he was amongst those captured during the Battle for Mt. Poseidon is present at the party announcing Hercules' birth and when Hercules achieves godhood. Poseidon (known in Roman in Neptune) is the ribbon wereworm god of the number zero, the Sea and the Fortunate Isles and king of the spirits and ghosts who is the brother of Zeus, Hades, Hera, Demeter and Hestia and son of Rhea and Cronus. 'You'll have to do better to lock fins with Poseidon!' Squiggles (giant guard squid), Elmer (small dolphin) Adventurous, determined, harsh, greedy, gullibleĪmphitrite (wife), Triton (son), Otus (son), Theseus (son), Orion (Son), Antaeus (Son)