Prometheus

History
Prometheus is the Titan of crafty counsel and forethought. He is known for giving humans fire.

Prometheus sided with the gods in the first war, because he knew that the Titans would lose, and as a result, he was not imprisioned.

However, because of his meddling nature, he gave fire to humans, which boosted their progress as a species, and made Zeus angry.

His punishment for giving humans fire was to be tied up, and have his liver eaten every day by a bird. Hercules saved him, and Prometheus was wary of the gods after that.

Later, he joins Kronos in the battle against the gods, and is given the responsibility of trying to get Percy to surrender. In that meeting, he gives Percy Pandora's Box and leaves.

In battle he fights for Kronos, however, when the Titans lose, Prometheus claims he was merely pretending to be on Kronos' side as to minimize bloodshed.