Percy Jackson

Walker Scobell

Percy Jackson

Leah Sava Jeffries

Annabeth Chase

Aryan Simhadri

Grover Underwood

Jessica Parker Kennedy

Medusa

Suzanne Cryer

Echidna

Timothy Omundson

Hefestus

Olivea Morton

Nancy Bobofit

Lance Reddick

Zeus

Lin-Manuel Miranda

Hermes

Jay Duplass

Hades

Ryan Cowie

Chaperon

Toby Stephens

Poseidon

Megan Mullally

Mrs. Dodds / Alecto

Jason Mantzoukas

Mr. D / Dionysus

Adam Copeland

Ares

Dior Goodjohn

Clarisse La Rue

Virginia Kull

Sally Jackson

Glynn Turman

Mr. Brunner / Chiron

Timm Sharp

Gabe Ugliano

Charlie Bushnell

Luke Castellan

Azriel Dalman

Young Percy Jackson

Nick Boraine

Kronos / Voice in Dream (voice)

Andrew Alvarez

Chris

Threnody Tsai

Sarah

Hiro Kanagawa

Headmaster

George Moran

Red Team Bully

Jelena Milinkovic

Nereid / Nereid (uncredited)

Simon Chin

Super (Eddie)

Manoj Sood

Principal

David Beairsto

Social Services Counselor

Athan Irinakis

Martin

Billy Christos Jr.

Snickering Kid #1

Malcolm Anthony Clarke

Snickering Kid #2

Drako Cheng

Bubble Gum Kid

Adam John Patrick Gillese

Kid #2

Mateo Deuma

Kid #3

Peyton Amelia Feltham

Nancy's Friend #1

Valencia Budijanto

Nancy's Friend #2

Jason Gray-Stanford

Maron

Kathleen Duborg

Helena

Garfield Wilson

Leneus

Sara Southey

Tisiphone

Jennifer Shirley

Oracle

Brooklyn Scotland

Samara

Darla Fay

Cashier

Alessandro Juliani

Transit Cop #1

Ely Jackson

Transit Cop #2

Gayle Yamamoto

Mom

Winson Won

Dad

Julia Lee

Child #1

Joshua Lee

Child #2

Joyce Robbins

Fate #1

La Nein Harrison

Fate #2

Cindy Piper

Fate #3

Ted Dykstra

Augustus

Julian Richings

Procrustes

Travis Woloshyn

Charon

Andrew McIlroy

Administrator

Jenaya Ross

Asphodelian

Bola Omodara

Security Guard