Nicknames

The Gods, Titans and Demigods all have names throughout the books:

Titans

 * The Piercer - Iapetus


 * The Crooked One - Kronos


 * The Ram - Krios


 * The Watcher - Hyperion


 * Slimy Worm - Prometheus *


 * Sky Bearer - Atlas

Gods

 * Corpse Breath - Hades *


 * Old Seaweed, Barnacle Beard - Poseidon *


 * The Messenger - Hermes


 * The Dove - Aphrodite


 * Old Drunk - Dionysus *
 * Wine Dude - Dionysus


 * Twin Archers - Apollo & Artemis
 * The Hot - Apollo
 * The Wise One- Athena
 * Fur Face- Hephaestus * (Not too rude, because Hephaestus laughed.)

Demigods and Creatures

 * Seaweed Brain - Percy Jackson
 * Peter Johnson - Percy Jackson *
 * Wise Girl - Annabeth Chase
 * Goat Boy - Grover Underwood
 * G-man - Grover Underwood


 * Pinecone Face - Thalia Grace *


 * Sparky - Jason Grace


 * Beauty Queen - Piper
 * Pipes - Leo Valdez & Tristan McLean


 * Big Guy - Tyson


 * Zombie Dude - Nico Di Angelo

An asterix next to the name means that the term is meant as an insult and so is rarely used. The insulting names are often thought up by demigods. For example, Thalia came up with the nickname "Slimy Worm" for Prometheus.