Suggestions by @lewiscosgrove

Clancy Brown

as Kronos in Percy Jackson: The Titan's Curse (????)

Maisie Williams

as Clarisse La Rue in Percy Jackson: The Titan's Curse (????)

Jing Lusi

as Mrs. Chase in Percy Jackson: The Titan's Curse (????)

Zendaya

as Zoë Nightshade in Percy Jackson: The Titan's Curse (????)

Lena Headey

as Hera in Percy Jackson: The Titan's Curse (????)

David Harbour

as Hephaestus in Percy Jackson: The Titan's Curse (????)

Lola Flanery

as Silena Beauregard in Percy Jackson: The Titan's Curse (????)

Wes Armstrong

as Frederick Chase in Percy Jackson: The Titan's Curse (????)

Jack Black

as Dionysus in Percy Jackson: The Titan's Curse (????)

Mackenzie Foy

as Artemis in Percy Jackson: The Titan's Curse (????)

Sam Claflin

as Apollo in Percy Jackson: The Titan's Curse (????)

Eleonora Gaggero

as Bianca di Angelo in Percy Jackson: The Titan's Curse (????)

Mark Ruffalo

as Chiron in Percy Jackson: The Titan's Curse (????)

Dave Bautista

as Atlas in Percy Jackson: The Titan's Curse (????)

Gal Gadot

as Athena in Percy Jackson: The Titan's Curse (????)

Tye Sheridan

as Tyson in Percy Jackson: The Titan's Curse (????)

Tom Hardy

as Ares in Percy Jackson: The Titan's Curse (????)

Jeff Bridges

as Zeus in Percy Jackson: The Titan's Curse (????)

Jason Momoa

as Poseidon in Percy Jackson: The Titan's Curse (????)

Mitchell Hope

as Luke Castellan in Percy Jackson: The Titan's Curse (????)