Suggestions by @lewiscosgrove

Tom Hardy

as Ares in Percy Jackson: The Sea of Monsters (????)

Mitchell Hope

as Luke Castellan in Percy Jackson: The Sea of Monsters (????)

Maisie Williams

as Clarisse La Rue in Percy Jackson: The Sea of Monsters (????)

Jason Momoa

as Poseidon in Percy Jackson: The Sea of Monsters (????)

Jaeden Martell

as Ganymede in Percy Jackson: The Sea of Monsters (????)

Caleb McLaughlin

as Grover Underwood in Percy Jackson: The Sea of Monsters (????)

Isabela Merced

as Thalia Grace in Percy Jackson: The Sea of Monsters (????)

Mia Talerico

as Annabeth Chase in Percy Jackson: The Sea of Monsters (????)

Jorge Benito

as Percy Jackson in Percy Jackson: The Sea of Monsters (????)

Lola Flanery

as Silena Beauregard in Percy Jackson (????)

Joe Pantoliano

as Gabe Ugliano in Percy Jackson (????)

Clancy Brown

as Kronos in Percy Jackson (????)

Hans Zimmer

as Composer in Percy Jackson (????)

Lewis Cosgrove

as Producer in Percy Jackson (????)

Rick Riordan

as Writer in Percy Jackson (????)

Lewis Cosgrove

as Director in Percy Jackson (????)

James McAvoy

as Hermes in Percy Jackson (????)

Mark Ruffalo

as Chiron in Percy Jackson (????)

Priyanka Chopra Jonas

as Medusa in Percy Jackson (????)

Lena Headey

as Hera in Percy Jackson (????)