Full Cast — Justice League (2001–2004)
Kevin Conroy
Batman (voice)
George Newbern
Superman (voice)
Susan Eisenberg
Wonder Woman (voice)
Phil LaMarr
Green Lantern (voice)
Carl Lumbly
J'onn J'onzz (voice)
Michael Rosenbaum
The Flash (voice)
Maria Canals-Barrera
Hawkgirl (voice)
Jason Marsden
Snapper Carr (voice) / Snapper Carr / SCU Officer (voice) / Snapper Carr / Thanagarian Soldier (voice) / Snapper Carr / Kid (voice) / Snapper Carr / Soldier (voice) / Snapper Carr / Bystander (voice)
Mark Hamill
The Joker / Solomon Grundy (voice) / Solomon Grundy (voice) / The Joker (voice) / The Joker / Customer (voice)
Jennifer Hale
Giganta / Killer Frost (voice) / Black Siren (voice) / Black Siren / Woman (voice) / Inza Nelson / Woman (voice) / Chambermaid / Sroya Bashir / Socialite (voice) / Inza Nelson (voice) / Chambermaid (voice)
Clancy Brown
Lex Luthor (voice)
Corey Burton
Pilot / Robber / Socialite (voice) / Dr. Blizzard / Mayor (voice) / Bald Technician / Doctor (voice) / Page (voice) / Brainiac / Forager (voice) / Dr. Blizzard / Ice Cream Man (voice)
Phil Morris
Vandal Savage (voice) / General / Soldier (voice)
Olivia D'Abo
Morgaine le Fey (voice) / Morgaine le Fey / Model (voice) / Star Sapphire (voice)
Susan Sullivan
Queen Hippolyta (voice)
Brian George
The President / Watchtower Personnel (voice) / Parasite / Morgan Edge / Reporter (voice) / Forian / Guardian of Oa (voice) / Forian (voice) / Parasite / Thug (voice)
Richard Doyle
Doctor (voice) / Dr. Louis / Detective #2 / Bum (voice) / U.N. Assembly Leader / Doctor (voice) / Doctor / Photographer (voice) / Big Brother Hawk / Thanagarian Soldier (voice)
Stephen McHattie
The Shade (voice)
René Auberjonois
Galius Zed / Kalanorian (voice) / Desaad / General Steppenwolf / Minion (voice) / Kanjar-Ro / Galius Zed / Guardian of Oa (voice)
Dave Thomas
Harv Hickman (voice) / Ernst (voice)
Peter Renaday
Graz / Bailiff (voice) / Councillor / Soldier (voice) / Diplomat / Restaurateur (voice) / Graz (voice)
Kristin Bauer
Mera / Reporter / Nurse (voice) / Mera (voice)
Robert Picardo
Blackhawk (voice) / Amazo (voice) / Blackhawk / Nazi Soldier (voice)
Ted Levine
Bulldozer / Nazi Lieutenant (voice) / Bulldozer (voice) / Sinestro (voice)
Ron Perlman
Clayface (voice) / Orion (voice)
Scott Rummell
Aquaman (voice)
Powers Boothe
Gorilla Grodd (voice)
Ian James Corlett
Thug (voice) / Thug / Crewman / Green Alien (voice) / Sarge / Captain / Soldier (voice)
Ted McGinley
Burns (voice) / Tom Turbine (voice)
Patrick Duffy
Steve Trevor (voice) / Steve Trevor / Flagship Pilot #1 (voice)
Kevin Michael Richardson
General Wells / Thanagarian Soldier / Diplomat (voice) / General Wells / Thanagarian Soldier / Soldier (voice) / General Wells / SCU Officer / Squadron Leader / Bikers (voice)
Ashley Edner
Little Girl (voice) / Trina (voice) / Jennifer (voice)
Jose Yenque
Copperhead (voice) / Copperhead / Driver (voice)
J. Grant Albrecht
General Hoffman (voice)
Ian Buchanan
Ultra-Humanite (voice)
Dana Delany
Lois Lane (voice) / Lois Lane / Maggie Sawyer (voice)
Efrem Zimbalist Jr.
Alfred Pennyworth (voice)
Victor Rivers
Hro Talak (voice)
Héctor Elizondo
Lt. Kragger (voice)
Elizabeth Peña
Paran Dul (voice)
Dennis Haysbert
Kilowog (voice)
Neil Patrick Harris
Ray Thompson (voice)
James Remar
Lead Manhunter (voice)
Kurtwood Smith
Prosecutor (voice)
Richard Green
Orm / Soldier (voice) / Orm (voice)
Xander Berkeley
General Brak / Soldier (voice) / General Brak / Dignitary / Soldier (voice)
Robert Englund
Felix Faust (voice)
John Rhys-Davies
Lord Hades (voice)
Eric Roberts
Mongul (voice)
David Paymer
Chancellor / Nomad (voice) / Chancellor / Captain (voice)
William Smith
Draaga (voice)
Phil Proctor
First Humanoid (voice) / First Humanoid / Gladiator (voice)
David Ogden Stiers
Solovar (voice) / Solovar / Car Owner (voice)
Virginia Madsen
Dr. Sarah Corwin (voice) / Dr. Sarah Corwin / Black-Haired Girl (voice)
André Sogliuzzo
SWAT Officer / Vendor (voice) / SWAT Officer / Gorilla Soldier (voice)
Karen Maruyama
Tsukuri (voice) / Tsukuri / Firefighter (voice)
Maggie Wheeler
Firefighter / Pilot (voice) / Antiope / Perfume Lady (voice)
Julie Bowen
Aresia (voice)
Vanessa Marshall
Lipstick Lady / Paramedic (voice) / Paramedic / Co-Pilot (voice)
David Naughton
The Streak (voice)
William Katt
Green Guardsman (voice)
Stephen Root
Cat Man (voice)
Udo Kier
The Music Master (voice)
Michael McKean
The Sportsman / Sgt. O'Shaughnessey (voice)
Jeffrey Jones
Sir Swami (voice)
Sheryl Lee Ralph
Cheetah (voice)
Efrain Figueroa
Copperhead (voice)
Soren Fulton
Mordred (voice) / Mordred / J'onn's Children (voice)
Michael T. Weiss
Etrigan the Demon / Jason Blood (voice)
Pam Grier
My'ria'h (voice)
Danica McKellar
Sapphire Stagg / Bystander (voice) / Sapphire Stagg (voice)
Tom Sizemore
Metamorpho / Rex Mason (voice)
Earl Boen
Simon Stagg (voice)
Richard Moll
Java / Mr. Braddock (voice)
Fred Dryer
Sgt. Rock / Flagship Pilot #2 (voice) / Sgt. Rock (voice)
Michael Ironside
Darkseid (voice)
Rob Paulsen
Lightray (voice) / Lightray / Helmsman (voice)
Mitchell Ryan
Highfather (voice)
Tracey Walter
Mophir (voice)
Enrico Colantoni
Glorious Gordon Godfrey (voice)
Brian Doyle-Murray
Artie Bauman (voice)
Bruce McGill
General McCormick (voice)
Michael Dorn
Kalibak / Cop (voice) / Kalibak (voice)
Oded Fehr
Dr. Fate / Kent Nelson (voice)
Lisa Edelstein
Mercy Graves (voice)
Tara Strong
Queen (voice) / Sera (voice)
Masasa Moyo
Beautiful Woman (voice)
Brad Garrett
Lobo (voice)
William Atherton
Dr. Destiny / John Dee (voice)
Arleen Sorkin
Harley Quinn (voice)
Khary Payton
Ten (voice)
Greg Cipes
Jack (voice)
Scott Menville
King (voice)
Dan Castellaneta
Kaznian Astronaut / Socialite / Photographer (voice) / Minister / Guard (voice)
Dorie Barton
Princess Audrey (voice)
Larry Drake
Colonel Vox (voice)
Charles Howerton
Armed Man (voice)
Kim Mai Guest
Katma Tui (voice) / Katma Tui / Landlady (voice)
Stan Ridgway
Communications Officer (voice)
Keith David
Despero (voice)
Pepe Serna
Shifflet (voice)
Carlos Ferro
Radocko (voice)