The Hermes Express is the Olympians' equivalent of a courier/messenger service, run by Hermes.

Percy Jackson and the OlympiansEdit

The Lightning ThiefEdit

Percy Jackson uses the Hermes Overnight Express to send the head of Medusa back to Mount Olympus after he beheaded her in the battle at Aunty Em's Gnome Emporium. Later, he finds the same package in his bedroom marked "Return to Sender" sent back by Poseidon.

The Sea of MonstersEdit

Hermes mentions to Percy that the Overnight Express business is booming, and later Poseidon also uses the service to send Percy a letter of which Hermes delivered himself.

The Heroes of OlympusEdit

The Demigod DiariesEdit

Percy Jackson and the Staff of HermesEdit

While Percy is celebrating his one month anniversary with Annabeth, a Hermes Express truck appears on the lawn in front of them. No one else in the area notices it except them and Hermes came out of the truck, asking Percy a favor to find his Caduceus so he could make his deliveries on time. Percy returned the staff and Hermes finishes his deliveries.

The Mark of AthenaEdit

When Annabeth Chase is on her quest for The Mark of Athena, she stumbles across a box from Hermes delivery services. She is excited, because it may be something to help with her quest. When she opens the crate, all that is left inside is bubble wrap. Later Annabeth realizes it was a gift, and uses it as gauze for her broken ankle.