Percy Jackson

Walker Scobell

Annabeth Chase

Leah Jeffries

Grover Underwood

Aryan Simhadri

Hades

Jay Duplass

Alecto / Mrs. Dodds

Megan Mullally

Dionysus / Mr. D.

Jason Mantzoukas

Luke Castellan

Charlie Bushnell

Young Percy Jackson

Azriel Dalman

Nereid

Jelena Milinkovic

Gabe Ugliano

Timm Sharp

Poseidon

Toby Stephens

Guest Star

Timothy Omundson

Clarisse La Rue

Dior Goodjohn

Hermes

Lin-Manuel Miranda

Augustus

Ted Dykstra

Zeus

Lance Reddick

Guest Star

Ryan Cowie

Maron

Jason Gray-Stanford

Medusa

Jessica Parker Kennedy

Sally Jackson

Virginia Kull

Tyson

Daniel Diemer

Guest Star

Joyce Robbins

Headmaster

Hiro Kanagawa

Echidna

Suzanne Cryer

Ares

Adam Copeland

Guest Star

Lanein Harrison

Chiron / Mr. Brunner

Glynn Turman

Kronos / Voice in Dream (voice)

Nick Boraine

Transit Cop #1

Alessandro Juliani

Nancy Bobofit

Olivea Morton

Helena

Kathleen Duborg

Guest Star

Cindy Piper

Transit Cop #2

Ely Jackson

Chris

Andrew Álvarez

Leneus

Garfield Wilson

Mom

Gayle Yamamoto

Super (Eddie)

Simon Chin

Sarah

Threnody Tsai

Alison Simms

Beatrice Kitsos

Tisiphone

Sara J Southey

Principal

Manoj Sood

Dad

Winson Won

Child #1

Julia Lee

Social Services Counselor

David Beairsto

Oracle

Jennifer Shirley

Martin

Athan Irinakis

Samara

Brooklyn Scotland

Child #2

Joshua Lee

Snickering Kid #2

Malcolm Clarke

Red Team Bully

George Moran

Bubble Gum Kid

Drako Cheng

Cashier

Darla Fay

Kid #2

Adam Gillese

Tantalus

Timothy Simons

Skull Eater

Daniel Cudmore

Kid #3

Mateo Deuma

Hephaestus Kid #2

Nova Ryzen Smith

Nancy's Friend #2

Valencia Budijanto

Dean

Mathew Yanagiya

Thalia Grace

Tamara Smart

Nancy's Friend #1

Peyton Feltham

Snickering Kid #1

Billy Christos Jr.

Chris Rodriguez

Kevin Chacon

Bronte

Sage Linder

Assistant Satyr

Ryan Beil

Petra

Cassandra Ebner

Mark

Marlo Marolle

Clarisse Cronie

Araya Boyce

Young Annabeth Chase

Marissa Winans