THE KNOWN Quest[]
- The Quest for the Master Bolt - Led by Percy Jackson in The Lightning Thief.
- The Quest for the Golden Fleece - Led by Clarisse La Rue Clarisse La Rue in The Sea of Monsters.
- The Quest for Artemis - Led by Zoë Nightshade in The Titan's Curse (in the winter).
- The Quest For Pan - Led by Grover Underwood thoughout the first series, until The Battle of the Labyrinth.
- The Quest for Daedalus - Led by Annabeth Chase in The Battle of the Labyrinth.
- The Quest to Free Hera - Led by Jason Grace in The Lost Hero.
- The Quest for Thanatos - Led by Frank Zhang in The Son of Neptune.
- The 12 Labors of Hercules - Led by Hercules Hercules
- Quest to Steal the Golden Apple - Led by Luke Castellan, mentioned in the Percy Jackson & the Olympians(failed).
- Unnamed Quest lead by Jason and Reyna to retrieveImperial Gold from a Confederate fort.
- The Quest for Athena Parthenos - Annabeth's solo quest in The Mark of Athena.