Justice League Action Rating Not Rated Genre Animation Cast Ken Jeong, Mark Hamill, Armin Shimerman, Josh Keaton, Tara Strong, Diedrich Bader, Lacey Chabert, Kevin Conroy, Michael Dorn, Carl Reiner, Joanne Spracklen, James Woods Latest News Synopsis Latest 'justice league action' News Joker & Trickster Kidnap Mark Hamill in Justice League Action Rob Leane Oct 27, 2017 Legendary voice actor (and Star Wars star) Mark Hamill voices every character (including, The Joker and Trickster) in this Justice League Action clip. Justice League Cartoon Pokes Fun at Batman V Superman Andrew Dyce Jul 15, 2017 The critics poked fun at Batman V Superman, but the animated series Justice League Action points out the movie's flawed logic. Mark Hamill Voices Swamp Thing in Justice League Action Clip Ashley Victoria Robinson Feb 3, 2017 A new clip from Justice League Action's latest episode shows the legendary Mark Hamill voicing the character of Swamp Thing. Justice League Action Trailer: DC Heroes Unite Again Braxter Timberlake Nov 24, 2016 Cartoon Network releases the first international trailer for the new animated series, Justice League Action. Justice League Action Pilot Synopsis & Premiere Date Revealed Braxter Timberlake Nov 22, 2016 The premiere date and a detailed synopsis for the debut of Justice League Action on Cartoon Network surfaces — and it's coming soon. Justice League Action Clips: Conroy's Batman, Hamill's Joker & More Sarah Moran Nov 10, 2016 Three clips from Justice League Action arrive, featuring Mark Hamill as the Joker and Kevin Conroy as Batman (among other voice actors). Justice League Action Comic-Con Trailer Shows Off Big DC Cast Bob Chipman Jul 22, 2016 The Comic-Con trailer for Justice League Action brings back classic heroes and surprising new friends from the DC Universe. Justice League Action Poster Shows Green Arrow, Plastic Man & More Matthew MacNabb Jun 28, 2016 The Justice League Action TV series poster features multiple DC superheroes, including unexpected additions like Plastic Man. Justice League Action Series Confirmed; Voice Cast Includes Conroy & Hamill Sarah Moran Jan 29, 2016 A new animated Justice League series is coming to Cartoon Network with Kevin Conroy and Mark Hamill returning as Batman and The Joker. Synopsis Batman, Superman and Wonder Woman will lead the DC Super Heroes against their most infamous foes.