Barbara is a dryad servant on Olympus.
The Senior Year Adventures
The Chalice of the Gods
When Percy Jackson tries to discretely return Ganymede's Chalice, she hides him in a dessert cart and pushes him over to Ganymede in exchange for meeting Annabeth Chase. After Ganymede is reunited with his chalice, she calls Percy an employee of Annabeth.
| The Senior Year Adventures | |
| Books: | The Chalice of the Gods | Wrath of the Triple Goddess |
| Main Characters: | Percy Jackson | Annabeth Chase | Grover Underwood |
| Secondary Characters: | Eudora | Hecuba | Gale | Sally Jackson | Paul Blofis |
| Minor Characters: | Naomi | Barbara | Elevator Security Guard | Blanche | Lucius | Margaret | Sparky | Li'l Killer | Mrs. Foray | Dr. Samuels | Dr. Sharma | Peter Stuyvesant | Mrs. O'Leary | Chiron | Connor Stoll | Clovis | Harley | Valentina Diaz | Juniper |
| Gods: | Ganymede | Iris | Hebe | Elisson | Poseidon | Zeus | Demeter | Hera | Hermes | Athena | Geras |
| Titans: | Rhea | Kronos | Hecate |
| Mythical Creatures: | Nereid | Nymph | Horned Serpent | Hellhound |
| Related Content: | Rick Riordan | Percy Jackson and the Olympians |