Justice League Action

Kevin Conroy

Batman (voice)

Jason J. Lewis

Clark Kent / Superman (voice) / Clark Kent / Superman / Boss Kack (voice) / Clark Kent / Superman / Desaad (voice) / Superman (voice) / Superman / Biff (voice) / Superman / Carmine Falcone (voice) / Superman / Chancellor Al-On (voice) / Superman / Desaad (voice) / Superman / Dex-Starr (voice) / Superman / Rath (voice) / Superman / Red Tornado (voice) / Superman / Zod (voice)

Rachel Kimsey

Diana Prince / Wonder Woman (voice) / Jackie (voice) / Wonder Woman (voice) / Wonder Woman / Bleez (voice) / Wonder Woman / Sis (voice)

Diedrich Bader

Booster Gold (voice) / Booster Gold / H.I.V.E. Master (voice) / Booster Gold / Uthool (voice)

Chris Diamantopoulos

Green Arrow (voice) / Green Arrow / H.I.V.E. Master (voice) / Green Arrow / Nyorlath (voice) / Oliver Queen / Green Arrow (voice)

Mark Hamill

Swamp Thing (voice) / The Joker (voice)

P.J. Byrne

Firestorm (voice)

Stephen Tobolowsky

Professor Stein (voice)

James Woods

Lex Luthor (voice) / Lex Luthor / Repulse (voice)

Khary Payton

Cyborg (voice) / Cyborg / Kanjar Ro (voice)

Dana Snyder

Penguin (voice) / Plastic Man (voice) / Plastic Man / Penguin (voice)

Tara Strong

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

Lacey Chabert

Zatanna (voice)

Charlie Schlatter

The Flash (voice)

Patton Oswalt

Space Cabbie (voice)

Damian O'Hare

Constantine (voice) / Constantine / Mr. Anderson (voice) / John Constantine / Abnegazar (voice)

Troy Baker

Hawkman (voice) / Hawkman / Jonas Glim (voice) / Hawkman / Kanto (voice) / Kanto (voice)

John DiMaggio

Lobo (voice) / Mongul (voice)

Jerry O'Connell

Atom (voice) / Ray Palmer / The Atom (voice)

Natalie Lander

Stargirl (voice) / Stargirl / Timmy (voice)

Jonathan Adams

Darkseid (voice)

Sean Astin

Billy Batson / Shazam (voice) / Shazam / Billy (voice)

Laura Post

Big Barda (voice) / Circe (voice)

Fred Tatasciore

Robot (voice) / Solomon Grundy (voice)

Cloris Leachman

Granny Goodness (voice)

Josh Keaton

Hal Jordan / Green Lantern (voice)

Jon Cryer

Felix Faust (voice)

Gilbert Gottfried

Mr. Mxyzptlk (voice)

Max Mittelman

Jimmy Olsen (voice) / Jimmy Olsen / Parasite (voice)

Gary Cole

Black Adam (voice)

Piotr Michael

Kalibak / Perry White (voice) / Perry White / Bruno Mannheim / Kalibak (voice)

Dan Donohue

Brother Night (voice) / Brother Night / Merlin (voice)

Trevor Devall

Cain (voice) / Jonah Hex (voice)

Patrick Seitz

Jason Blood / Etrigan (voice) / Jason Blood / Etrigan the Demon / Merlin (voice)

Jake T. Austin

Blue Beetle (voice)

John de Lancie

Brainiac (voice)

Jasika Nicole

Vixen (voice)

Noel Fisher

Klarion the Witch Boy (voice)

Crispin Freeman

Martian Manhunter (voice)

Oliver Vaquer

Mr. Mind (voice)

Hannibal Buress

Michael Holt / Mister Terrific (voice)

Ely Henry

Noah Kuttler / Calculator (voice)

David Sobolov

Gorilla Grodd (voice)

Fryda Wolff

Faora (voice)

Andy Richter

Chronos (voice)

Ken Jeong

Toyman (voice)

Michael Dorn

Atrocitus (voice)

Joanne Spracklen

Supergirl (voice)

Carl Reiner

The Wizard (voice)

David Lodge

Calythos / Warden (voice)

Melissa Disney

Mom / Brat (voice)

Kevin Shinick

Dad (voice)

Peter Jessop

Steppenwolf (voice)

William Salyers

Virman Vunderbar (voice)

Dayci Brookshire

Kid Zatanna (voice)

Erica Luttrell

Kid Dr. Fate (voice)

Paula Rhodes

Kid Constantine (voice)

Julianne Grossman

Hippolyta (voice)

Armin Shimerman

Zilius Zox (voice)

Mena Suvari

Killer Frost (voice)

Jessica Walter

Athena (voice)

Robert Picardo

Harvey Dent / Two-Face (voice)

Christian Slater

Deadshot (voice)

Natasha Leggero

Poison Ivy (voice)

Gillian Jacobs

Roxy Rocket (voice)

Thomas Lennon

Amazo (voice)

Travis Willingham

Bizarro (voice)

Jon Lovitz

Sid Sharp (voice)

Darin De Paul

Sinestro (voice)

Jim Ward

The Brain (voice)

Brent Spiner

Edward Nigma / Riddler (voice)

Roger Craig Smith

Mr. Miracle (voice)

Grey DeLisle

Navigational System (voice)

John Astin

Uncle Dudley (voice)

Dania Ramirez

Red Velvet (voice)

Peter Stormare

Mr. Freeze (voice)