Justice League Action

Kevin Conroy

Batman (voice) (42 episodes)

Jason J. Lewis

Superman (voice) (20 episodes), Clark Kent / Superman (voice) (2 episodes), Superman / Zod (voice) (2 episodes), Clark Kent / Superman / Boss Kack (voice) (1 episode), Superman / Biff (voice) (1 episode), Superman / Carmine Falcone (voice) (1 episode), Superman / Rath (voice) (1 episode), Superman / Desaad (voice) (1 episode), Superman / Chancellor Al-On (voice) (1 episode), Clark Kent / Superman / Desaad (voice) (1 episode), Superman / Dex-Starr (voice) (1 episode), Superman / Red Tornado (voice) (1 episode)

Rachel Kimsey

Wonder Woman (voice) (22 episodes), Diana Prince / Wonder Woman (voice) (2 episodes), Wonder Woman / Sis (voice) (1 episode), Jackie (voice) (1 episode), Wonder Woman / Bleez (voice) (1 episode)

Diedrich Bader

Booster Gold (voice) (6 episodes), Booster Gold / Uthool (voice) (1 episode), Booster Gold / H.I.V.E. Master (voice) (1 episode)

Chris Diamantopoulos

Green Arrow (voice) (5 episodes), Green Arrow / Nyorlath (voice) (1 episode), Oliver Queen / Green Arrow (voice) (1 episode), Green Arrow / H.I.V.E. Master (voice) (1 episode)

P.J. Byrne

Firestorm (voice) (8 episodes)

Stephen Tobolowsky

Professor Stein (voice) (8 episodes)

Mark Hamill

Swamp Thing (voice) (4 episodes), The Joker (voice) (4 episodes)

Khary Payton

Cyborg (voice) (6 episodes), Cyborg / Kanjar Ro (voice) (1 episode)

James Woods

Lex Luthor (voice) (6 episodes), Lex Luthor / Repulse (voice) (1 episode)

Dana Snyder

Plastic Man (voice) (4 episodes), Penguin (voice) (1 episode), Plastic Man / Penguin (voice) (1 episode)

Patton Oswalt

Space Cabbie (voice) (5 episodes)

Lacey Chabert

Zatanna (voice) (5 episodes)

Charlie Schlatter

The Flash (voice) (5 episodes)

Tara Strong

Harley Quinn (voice) (1 episode), Harley Quinn / Ember (voice) (1 episode), Kid Batman (voice) (1 episode), Dr. Harleen Quinzel / Harley Quinn (voice) (1 episode), Lois Lane (voice) (1 episode)

Troy Baker

Hawkman / Jonas Glim (voice) (1 episode), Hawkman / Kanto (voice) (1 episode), Hawkman (voice) (1 episode), Kanto (voice) (1 episode)

John DiMaggio

Lobo (voice) (3 episodes), Mongul (voice) (1 episode)

Damian O'Hare

Constantine (voice) (2 episodes), John Constantine / Abnegazar (voice) (1 episode), Constantine / Mr. Anderson (voice) (1 episode)

Jerry O'Connell

Atom (voice) (3 episodes), Ray Palmer / The Atom (voice) (1 episode)

Jonathan Adams

Darkseid (voice) (4 episodes)

Natalie Lander

Stargirl (voice) (3 episodes), Stargirl / Timmy (voice) (1 episode)

Sean Astin

Billy Batson / Shazam (voice) (2 episodes), Shazam / Billy (voice) (1 episode)

Fred Tatasciore

Solomon Grundy (voice) (2 episodes), Robot (voice) (1 episode)

Laura Post

Big Barda (voice) (2 episodes), Circe (voice) (1 episode)

Jon Cryer

Felix Faust (voice) (3 episodes)

Cloris Leachman

Granny Goodness (voice) (3 episodes)

Josh Keaton

Hal Jordan / Green Lantern (voice) (3 episodes)

Gilbert Gottfried

Mr. Mxyzptlk (voice) (3 episodes)

Gary Cole

Black Adam (voice) (2 episodes)

Piotr Michael

Perry White / Bruno Mannheim / Kalibak (voice) (1 episode), Kalibak / Perry White (voice) (1 episode)

Oliver Vaquer

Mr. Mind (voice) (2 episodes)

Dan Donohue

Brother Night (voice) (1 episode), Brother Night / Merlin (voice) (1 episode)

Jake T. Austin

Blue Beetle (voice) (2 episodes)

Andy Richter

Chronos (voice) (2 episodes)

Max Mittelman

Jimmy Olsen / Parasite (voice) (1 episode), Jimmy Olsen (voice) (1 episode)

Crispin Freeman

Martian Manhunter (voice) (2 episodes)

Ken Jeong

Toyman (voice) (2 episodes)

Jasika Nicole

Vixen (voice) (2 episodes)

Hannibal Buress

Michael Holt / Mister Terrific (voice) (2 episodes)

Ely Henry

Noah Kuttler / Calculator (voice) (2 episodes)

Patrick Seitz

Jason Blood / Etrigan (voice) (1 episode), Jason Blood / Etrigan the Demon / Merlin (voice) (1 episode)

Trevor Devall

Cain (voice) (1 episode), Jonah Hex (voice) (1 episode)

Noel Fisher

Klarion the Witch Boy (voice) (2 episodes)

John de Lancie

Brainiac (voice) (2 episodes)

Michael Dorn

Atrocitus (voice) (2 episodes)

Joanne Spracklen

Supergirl (voice) (2 episodes)

David Sobolov

Gorilla Grodd (voice) (2 episodes)

Fryda Wolff

Faora (voice) (2 episodes)

Carl Reiner

The Wizard (voice) (1 episode)

Melissa Disney

Mom / Brat (voice) (1 episode)

Kevin Shinick

Dad (voice) (1 episode)

Peter Jessop

Steppenwolf (voice) (1 episode)

William Salyers

Virman Vunderbar (voice) (1 episode)

David Lodge

Calythos / Warden (voice) (1 episode)

Natasha Leggero

Poison Ivy (voice) (1 episode)

Jim Ward

The Brain (voice) (1 episode)

Julianne Grossman

Hippolyta (voice) (1 episode)

Gillian Jacobs

Roxy Rocket (voice) (1 episode)

Dania Ramirez

Red Velvet (voice) (1 episode)

Dayci Brookshire

Kid Zatanna (voice) (1 episode)

Erica Luttrell

Kid Dr. Fate (voice) (1 episode)

Paula Rhodes

Kid Constantine (voice) (1 episode)

Thomas Lennon

Amazo (voice) (1 episode)

Travis Willingham

Bizarro (voice) (1 episode)

Grey DeLisle

Navigational System (voice) (1 episode)

Brent Spiner

Edward Nigma / Riddler (voice) (1 episode)

Roger Craig Smith

Mr. Miracle (voice) (1 episode)

Mena Suvari

Killer Frost (voice) (1 episode)

Peter Stormare

Mr. Freeze (voice) (1 episode)

Jon Lovitz

Sid Sharp (voice) (1 episode)

Darin De Paul

Sinestro (voice) (1 episode)

Armin Shimerman

Zilius Zox (voice) (1 episode)

Jessica Walter

Athena (voice) (1 episode)

John Astin

Uncle Dudley (voice) (1 episode)

Robert Picardo

Harvey Dent / Two-Face (voice) (1 episode)

Christian Slater

Deadshot (voice) (1 episode)

Alan Burnett

Producer (52 episodes)

Jay Bastian

Executive producer (52 episodes)

Butch Lukic

Producer (52 episodes)

Sam Register

Executive producer (52 episodes)

James Krieg

Producer (52 episodes)

Jake Castorena

Director (20 episodes)

Doug Murphy

Director (16 episodes)

Shaunt Nigoghossian

Director (15 episodes)

Curt Geda

Director (1 episode)

Heath Corson

Writer (2 episodes)

Paul Dini

Writer (1 episode)

Andrew Kreisberg

Story (1 episode)

Matthew Humphreys

Storyboard Artist (1 episode)