Aigaios

Aigaios is the Titan of sea-storms. He is the son of Gaia and Pontus.

History
Oceanus was neutral during the first war between the gods and Titans, but Aigaios and Kronos both tried to convince Oceanus many times to participate and he still refused. In the second war with the gods, Oceanus and Aigaios both agreed to fight in the war, specifically Poseidon. After the gods won, Aigaios and Oceanus fled back into the depths of the sea.

The Titan's Curse
Tyson says Aigaios is one of the Titans helping Oceanus protect the Princess Andromeda from Poseidon.