Courtney Whitmore / Stargirl

Brec Bassinger

Pat Dugan / S.T.R.I.P.E.

Luke Wilson

Barbara Whitmore

Amy Smart

Yolanda Montez / Wildcat

Yvette Monreal

Beth Chapel/Doctor Mid-Nite

Anjelika Washington

Mike Dugan

Trae Romano

Rick Tyler / Hourman

Cameron Gellman

Cynthia 'Cindy' Burman / Shiv

Meg DeLacy

Jordan Mahkent / Icicle

Neil Jackson

Lawrence 'Crusher' Crock / Sportsmaster

Neil Hopkins

Henry King Jr. / Brainwave Jr.

Jake Austin Walker

Henry King Sr. / Brainwave

Christopher James Baker

Paula Brooks / Tigress

Joy Osmanski

Cameron Mahkent

Hunter Sansone

Sylvester Pemberton / Starman

Joel McHale

James Chapel

Gilbert Glenn Brown

Dr. Bridget Chapel

Kron Moore

Artemis Crock

Stella Smith

Jakeem Williams

Alkoya Brunson

Lily Mahkent

Kay Galvin

Richard Swift / The Shade

Jonathan Cake

Maria Carmen Saravia / Maria / Waitress

Maria Sager

Sofus Mahkent

Jim France

Steven Sharpe / The Gambler

Eric Goins

Eclipso

Nick E. Tarabay

Isaac Bowin

Max Frantz

Zeek

King Orba

Charles McNider / Dr. Mid-Nite / Chuck (voice)

Alex Collins

Dr. Shiro Ito / Dragon King

Nelson Lee

Jenny Williams

Ashley Winfrey

Anaya Bowin

Hina Khan

Chuck (voice) / Charles McNider / Dr. Mid-Nite

Henry Thomas

The Thunderbolt (voice)

Seth Green

Janitor Justin / Shining Knight

Mark Ashworth

Brian Tanner Balloid / Brian Balloid

Jasun Jabbar Wardlaw Jr.

Jennie-Lynn Hayden / Jade

Ysa Penarejo

Bruce

Milo Stein

Maria Montez

Kikey Castillo

Travis Thomas

Sam Brooks

Paul Deisinger

Randy Havens

Miss Woods

Deborah Bowman

Ted Grant / Wildcat

Brian Stapf

Joey Zarick

Wil Deusner