Wood nymph

In Greek mythology, a wood nymph (AKA Dryad)is a female spirit typically associated with a particular location or land form. Other nymphs, always in the shape of young nubile maidens, were part of the retinue of a god, such as Dionysus, Hermes, or Pan, or a goddess, generally Artemis.

In The Lightning Thief, Luke summons a pit scorpion to kill Percy. When it gets Percy, he Percy is trying to get to camp, but he is dying. Luckily, some wood nymphs carry him to the Big House. They are unnamed, but they did save his life.

Nymphs were the frequent target of satyrs. During The Sea of Monsters, Grover and Percy watch as a satyr chases a redheaded nymph until she goes into tree form and the satyr kisses her. Grover sees this as perfectly normal. They live in groves, in trees and in valleys and cool grottoes. The nymphs at Camp Half-Blood act as waitresses at mealtimes.

Juniper, Grover's girlfriend is a wood nymph, and Grover is said to once had had a crush on a wood nymph that lived inside a Blueberry Bush.