Suggestions by @lewiscosgrove

Finn Wolfhard

as Nico di Angelo in Percy Jackson: The Last Olympian (????)

Mitchell Hope

as Luke Castellan in Percy Jackson: The Last Olympian (????)

Caleb McLaughlin

as Grover Underwood in Percy Jackson: The Last Olympian (????)

Isabela Merced

as Thalia Grace in Percy Jackson: The Last Olympian (????)

Mia Talerico

as Annabeth Chase in Percy Jackson: The Last Olympian (????)

Jorge Benito

as Percy Jackson in Percy Jackson: The Last Olympian (????)

Hans Zimmer

as Composer in Percy Jackson: The Battle of the Labyrinth (????)

Peter Jackson

as Producer in Percy Jackson: The Battle of the Labyrinth (????)

Jon Favreau

as Producer in Percy Jackson: The Battle of the Labyrinth (????)

Lewis Cosgrove

as Producer in Percy Jackson: The Battle of the Labyrinth (????)

Rick Riordan

as Writer in Percy Jackson: The Battle of the Labyrinth (????)

Lewis Cosgrove

as Director in Percy Jackson: The Battle of the Labyrinth (????)

Robert Sheehan

as Pan in Percy Jackson: The Battle of the Labyrinth (????)

Georgie Henley

as Juniper in Percy Jackson: The Battle of the Labyrinth (????)

Paul Rudd

as Paul Blofis in Percy Jackson: The Battle of the Labyrinth (????)

Chosen Jacobs

as Charles Beckendorf in Percy Jackson: The Battle of the Labyrinth (????)

David Harbour

as Hephaestus in Percy Jackson: The Battle of the Labyrinth (????)

Indiana Evans

as Calypso in Percy Jackson: The Battle of the Labyrinth (????)

Lola Flanery

as Silena Beauregard in Percy Jackson: The Battle of the Labyrinth (????)

Tye Sheridan

as Tyson in Percy Jackson: The Battle of the Labyrinth (????)