Piper's Sword

Piper's Sword is a Celestial Bronze sword that originally belonged to Zethes. After his defeat, Piper McLean claimed it as a Spoil of War and used it as her primary weapon alongside Katoptris.

The sword is in Zethes' possession when he, Calais and Khione attack the Argo II. After Piper McLean and Festus defeat the invaders, Piper claims the sword and begins utilizing it as her own personal weapon alongside Katoptris.

The Blood of Olympus[]

Piper continues to use the sword, particularly when she battles the Gigantes Periboia sword against sword with the help of Aphrodite and defeats her. Piper is noted to be the most impressive out of the fighters, holding her own despite Periboia's size advantage.

During the Battle of Half-Blood Hill, Piper somehow loses her sword during the chaos before facing off against Gaea when she rises at Camp Half-Blood. She apparently loses it for good as the sword is not stated to be in her possession again afterwards.

Items
Personal Weapons:	Riptide \| Annabeth's Knife \| Backbiter \| Master Bolt \| Poseidon's Trident \| Nico's Sword \| Thalia's Spear \| Aegis \| Ares' Sword \| Ares' Shield \| Caduceus \| Apollo's Golden Bow \| Silver Bow \| Artemis' Knives \| Hades' Sword \| Hades' Staff \| Kronos' Scythe \| Ivlivs \| Katoptris \| Hazel's Spatha \| Frank's Spear \| Reyna's Spear \| Juno's Gladius \| Annabeth's Sword \| Sumarbrander \| Gungnir \| Gjallar \| Mjolnir \| Gríðarvölr \| Khopesh \| Mallory's Serrated Knives \| Meg's Twin Imperial Gold siccae blades \| Thyrsus \| Hecate's Torches \| Minotaur's Axe \| Leroy's Sword \| Tyson's Javelin \| Alex's Garrote Wire \| Piper's Sword
Magical Items:	Annabeth's Yankees Cap \| Helm of Darkness \| Pandora's Pithos \| Winged Shoes \| Golden Fleece \| Flying Chariot \| Golden Apple \| Apples of Immortality \| Greek Fire \| Hermes' Multivitamins \| Nectar and Ambrosia \| Stygian Ice Whistle \| Keys of Hades \| Leo's Magical Toolbelt \| Serapis' Staff \| Magic 8 Ball \| Arrow of Dodona \| Pig Ball \| Mechanical Spider \| Angel Statues \| Athena Parthenos \| Chiron's Wheelchair \| Diocletian's Scepter \| Flaming Dodgeball \| Gleipnir \| Poseidon's Pearls \| Queen Hippolyta's Belt \| Mistletoe Arrow \| Frank's Stick \| Expand-o-Duck \| Caligula's Caligae \| Ran's Net \| Rune Stones \| Nábrók \| Pomegranate \| Chains of Prometheus
Spoils of War:	Minotaur's Horn \| Medusa's Head \| Kampê's Scimitars \| Nemean Lion's Pelt \| Gorgon Blood \| Cornucopia \| Lydian Drakon Hide \| Phineas' Robe and Slippers \| Triptolemus's Almanac \| Odysseus' Astrolabe
Items:	Camp Necklace \| Chameleon Armor \| Daedalus' Laptop \| Golden drachma \| Denarius \| Red Gold \| Mark of Athena \| Thalia's Shield \| Video Shield \| Wristwatch Shield \| Golden Mango \| Sibylline Books \| Letter of Recommendation
Ships	Amos' Boat \| Argo II \| CSS Birmingham \| Egyptian Queen \| Julia Drusilla Yachts \| Pax \| Queen Anne's Revenge \| Reed Boat \| Naglfar \| Gorgyra's Canoe
Blessed Metals:	Adamantine \| Celestial Bronze \| Imperial Gold \| Stygian Iron \| Bone Steel

Piper's Sword

The Heroes of Olympus[]

The House of Hades[]

The Blood of Olympus[]