- Carl Reiner - The Wizard (voice)
- David Lodge - Calythos / Warden (voice)
- Gary Cole - Black Adam (voice)
- Melissa Disney - Mom / Brat (voice)
- Kevin Shinick - Dad (voice)
- Peter Jessop - Steppenwolf (voice)
- William Salyers - Virman Vunderbar (voice)
- Dan Donohue - Brother Night (voice)
- Dayci Brookshire - Kid Zatanna (voice)
- Erica Luttrell - Kid Dr. Fate (voice)
- Paula Rhodes - Kid Constantine (voice)
- Patrick Seitz - Jason Blood / Etrigan the Demon / Merlin (voice)
- Damian O'Hare - Constantine (voice)
- Julianne Grossman - Hippolyta (voice)
- Max Mittelman - Jimmy Olsen (voice)
- Jake T. Austin - Blue Beetle (voice)
- Troy Baker - Kanto (voice)
- Trevor Devall - Cain (voice)
- Armin Shimerman - Zilius Zox (voice)
- Mena Suvari - Killer Frost (voice)
- Piotr Michael - Perry White / Bruno Mannheim / Kalibak (voice)
- Jessica Walter - Athena (voice)
- Robert Picardo - Harvey Dent / Two-Face (voice)
- Christian Slater - Deadshot (voice)
- John de Lancie - Brainiac (voice)
- Jason J. Lewis - Superman (voice)
- Natasha Leggero - Poison Ivy (voice)
- Jasika Nicole - Vixen (voice)
- Sean Astin - Billy Batson / Shazam (voice)
- Diedrich Bader - Booster Gold (voice)
- Gillian Jacobs - Roxy Rocket (voice)
- Tara Strong - Harley Quinn / Ember (voice)
- John DiMaggio - Lobo (voice)
- Chris Diamantopoulos - Green Arrow (voice)
- Laura Post - Big Barda (voice)
- James Woods - Lex Luthor (voice)
- Noel Fisher - Klarion the Witch Boy (voice)
- Crispin Freeman - Martian Manhunter (voice)
- Thomas Lennon - Amazo (voice)
- Travis Willingham - Bizarro (voice)
- Fred Tatasciore - Solomon Grundy (voice)
- Jerry O'Connell - Atom (voice)
- Jon Lovitz - Sid Sharp (voice)
- Rachel Kimsey - Wonder Woman (voice)
- Darin De Paul - Sinestro (voice)
- Natalie Lander - Stargirl (voice)
- Khary Payton - Cyborg (voice)
- Oliver Vaquer - Mr. Mind (voice)
- Hannibal Buress - Michael Holt / Mister Terrific (voice)
- Ely Henry - Noah Kuttler / Calculator (voice)
- Jim Ward - The Brain (voice)
- P.J. Byrne - Firestorm (voice)
- Mark Hamill - The Joker (voice)
- Stephen Tobolowsky - Professor Stein (voice)
- Dana Snyder - Plastic Man (voice)
- Brent Spiner - Edward Nigma / Riddler (voice)
- David Sobolov - Gorilla Grodd (voice)
- Fryda Wolff - Faora (voice)
- Roger Craig Smith - Mr. Miracle (voice)
- Andy Richter - Chronos (voice)
- Jonathan Adams - Darkseid (voice)
- Lacey Chabert - Zatanna (voice)
- Ken Jeong - Toyman (voice)
- Charlie Schlatter - The Flash (voice)
- Cloris Leachman - Granny Goodness (voice)
- Grey DeLisle - Navigational System (voice)
- Patton Oswalt - Space Cabbie (voice)
- Josh Keaton - Hal Jordan / Green Lantern (voice)
- John Astin - Uncle Dudley (voice)
- Jon Cryer - Felix Faust (voice)
- Gilbert Gottfried - Mr. Mxyzptlk (voice)
- Michael Dorn - Atrocitus (voice)
- Joanne Spracklen - Supergirl (voice)
- Dania Ramirez - Red Velvet (voice)
- Peter Stormare - Mr. Freeze (voice)
- Kevin Conroy - Batman (voice)
- James Krieg
- Butch Lukic
- Alan Burnett
- Jay Bastian
- Sam Register
Carl Reiner hace el papel de The Wizard (voice).
David Lodge hace el papel de Calythos / Warden (voice).
Gary Cole hace el papel de Black Adam (voice).
Melissa Disney hace el papel de Mom / Brat (voice).
Kevin Shinick interpreta a Dad (voice) en la serie.
Peter Jessop interpreta a Steppenwolf (voice) en la serie.
William Salyers hace el papel de Virman Vunderbar (voice).
Dan Donohue interpreta a Brother Night (voice) en la serie.
Dayci Brookshire hace el papel de Kid Zatanna (voice).
Erica Luttrell interpreta a Kid Dr. Fate (voice) en la serie.
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