The son of NeptuneRick Riordan, Robert VendittiThe Heroes of Olympus: The Graphic Novels, book 2

Characters in The son of Neptune

5 characters, main characters first.

Main characters

Percy Jackson
Also in The Mark of Athena Graphic Novel, The House of Hades Graphic Novel
Hazel Levesque
Also in The Mark of Athena Graphic Novel
Frank Zhang
Also in The Mark of Athena Graphic Novel