Crystal Reed as Perseus ' Percy' Jackson

" Daughter of Posideon "

" Aqua woman "

Holland Roden as Samantha Martinez

" Daughter of Thanatos "

" Banshee "

Adelaide Kane as Thalia Grace

" Daughter of Zeus"

" Red Arrow "

Skandar Keynes as Nico Di Angelo

" Son of Hades "

" Shadow"

Burkely Duffield as Will Solaces

" Son of Apollo "

" Eclipse"