Ar Book Comercial
The Mark of Athena
In the novel Mark of Athena by Rick Riordan there are 7 main characters their names are Jason Grace, Piper McClean, Leo Valdez, Annabeth Chase, Percy Jackson, Hazel Levesque, and Frank Zhang. They are all demi-gods or half greek god half normal person. When they all meet up in Camp Jupiter's, New Rome, in the Argo II.