Ocean is the eldest of the Titans and his original power was equal to Zeus or Chronos !

During the war, Ocean chosen neutrality.

After the defeat of the Titans, the Olympians had to face the facts:

They would never have won if ocean had helped his family!

unresolved to enclose him in Tartarus ...

Or to accept a Titan in Olympus. The gods finally found a compromise :

His powers were diminished and he was exiled on earth ...

Exiled, fallen, but away from any danger as long as he did not interfere in the divine affairs ...

Living both on Earth, Ocean & Athena finally got to know and appreciate each other. They became friends.

At that point that Ocean put its neutrality and often life-threatening.He often murder in the shadows, overzealous devotees who sought to awaken their God before the return on earth of the goddess !!!

If Athena deserves every one of his victories, she got more than one ...

Because Ocean watched over her sleep !!!