Justice League: Action is a short-form web series that began airing on the DC Kids' YouTube channel on June 29, 2017.
Voice Cast (Uncredited)
- Charlie Schlatter - The Flash/Barry Allen
- Christian Slater - Deadshot/Floyd Lawton
- Cloris Leachman - Granny Goodness (ep9)
- Dana Snyder - Plastic Man/Patrick O'Brian
- Diedrich Bader - Booster Gold/Michael Jon Carter
- James Woods - Lex Luthor (ep5)
- Jason J. Lewis - Superman/Clark Kent
- Jerry O'Connell - The Atom/Ray Palmer (ep1)
- John DiMaggio - Lobo (ep2)
- Ken Jeong - Toyman
- Kevin Conroy - Batman/Bruce Wayne
- Khary Payton - Cyborg/Victor Stone
- Mark Hamill - Mark Hamill (ep14), Swamp Thing/Dr. Alec Holland (ep14), The Joker (ep14), Trickster/James Jesse (ep14)
- Natalie Lander - Stargirl/Courtney Whitmore
- Natasha Leggero - Poison Ivy/Pamela Isley (ep7)
- P.J. Byrne - Firestorm/Ronnie Raymond
- Patton Oswalt - Space Cabbie
- Rachel Kimsey - Wonder Woman/Diana Prince
- Stephen Tobolowsky - Dr. Martin Stein