Amandla Stenberg as Hazel Levesque

" Daughter of Pluto "

" Spectre "

Ki Hong Lee as Frank Zhang

" Son of Mars "

" Beast Boy "

Victoria Justices as Piper McLean

" Daughter of Aphrodite "

" Siren "

Alex Pettyfer as Jason Grace

" Son of Jupiter "

" Green Arrow "

Jake T Austin as Leo Valdez

" Son of Hephaestus "

" Fire Storm "