Suggestions by @comodin

Pierce Brosnan

as Chiron in Titan Curse

Brandon T. Jackson

as Grover Underwood in Titan Curse

Rachel Zegler

as Bianca di Angelo in Titan Curse

Ariana Greenblatt

as Zoë Nightshade in Titan Curse

Emilia Clarke

as Mera Xebella in Return of the Heroes

Matt Reeves

as Director in Cleopatra

Susan Downey

as Producer in Cleopatra

Christopher Walken

as Crassus in Cleopatra

Kristanna Loken

as Livia in Cleopatra

Angus Macfadyen

as Quintus in Cleopatra

Rosario Dawson

as Aya in Cleopatra

Emily Blunt

as Varinia in Cleopatra

Paul Dano

as Whirlwind in Rise of the Aprentice

Paloma Kwiatkowski

as Thalia Grace in Titan Curse

Alexandra Daddario

as Annabeth Chase in Titan Curse

Logan Lerman

as Percy Jackson in Titan Curse

CGI Character

as Manticore Thorn in Titan Curse

John Lithgow

as Doctor Thorn in Titan Curse

Ed Skrein

as Bayek in Cleopatra

Zoe Aggeliki

as Silena Beauregard in Titan Curse