1. Perseus: Son of Zeus, a demigod who takes on the task of saving mankind from the wrath of the Titans.
2. Io: A princess from Argos who is rescued by Perseus and becomes a love interest for him.
3. Draco: A skilled thief who accompanies Perseus on his journey and assists him in various tasks.
4. Io's father: The King of Argos, initially skeptical of Perseus but eventually coming to trust and support him.
5. Zeus: The King of the Gods, Perseus' father, who becomes weakened and imprisoned by the Titans.
6. Hades: The God of the Underworld, brother of Zeus, who is also affected by the Titans' actions.
7. Poseidon: The God of the Sea, brother of Zeus, who assists Perseus in his quest by providing assistance and guidance.
8. Medusa: A powerful and monstrous Gorgon with the ability to turn anyone who looks directly at her into stone. Perseus must defeat her to obtain a key item for his quest.
9. Calibos: A deformed son of Thetis and Poseidon, who allies with the Titans and becomes their leader.
10. The Kraken: A giant and fearsome sea monster, controlled by the Titans, that Perseus must face in the final battle.