System Error
Justice League Action - S1 - E44
Trapped in a “pocket dimension” the Justice League has to fight in an endless simulation that Darkseid can reset over and over again. Its up to the Batman to come up with an escape plan and contact the Justice League?
Justice League Action: Season 1 - 52 Episode s
1x1 - Classic Rock (1)
December 16, 2016
In a fight with Black Adam on the Rock of Eternity several Djinns get released and the Justice League has to stop them. Part one of a four part episode also known as Shazam Slam.
1x2 - Power Outage (2)
December 16, 2016
A lava based Djinn absorbes the powers of Parasite giving Wonder Woman and Superman a hard time beating a creature that drains them of their own powers. Part two of a four part episode also known as Shazam Slam.
1x3 - Night of the Bat (3)
December 16, 2016
Batman is possessed by a djinn who overloads and power core from the Hall of Justice. Part three of a four part episode also known as Shazam Slam.
1x4 - Abate and Switch (4)
December 16, 2016
The last three djinn are proving formidable foes when Black Adam shows up again with a vengeance. With the help of John Constantine, Plastic Man, Swamp Thing and Shazam the League puts in a team effort to stop Black Adam and the djinn. At the site of the battle the watchtower is built as a replacement HQ. Part four of a four part episode also known as Shazam Slam.
1x5 - Follow That Space Cab!
January 21, 2017
Superman and Hawkman receive the help of an honorable space cab driver as they try to protect Mr. Mind from being captured by Lobo.
1x6 - Nuclear Family Values
January 28, 2017
Firestorm's family values. The heat is on when the Justice League enlist the help of Firestorm. Taking a trip to where it all began, Firestorm encounters a not so all American family.
1x7 - Zombie King
February 4, 2017
Batman teams up with John Constantine, Zatanna, and Swamp Thing when Solomon Grundy tries to raise a zombie army
1x8 - Galaxy Jest
February 11, 2017
Wonder Woman and Superman have to rescue Joker from Mongul, whilst Batman and Flash try to stop a massive laughing gas bomb hidden away in Gotham.
1x9 - Time Share
February 18, 2017
Batman and Blue Beetle are thrown back in time where they must stop Chronos from destroying Batman on his first night in Gotham where he faces off against Carmine Falcone and his men.
1x10 - Under a Red Sun
February 25, 2017
After a brief team up with Batman and Big Barda in their battle against the Parademons, Superman is transported to a planet orbiting a red sun by Steppenwolf. This is part of Steppenwolf's plan to kill Superman and become a legend. Now with his powers slowly depleting, Superman must defeat Steppenwolf and get back to Earth. As this is happening, Batman and Big Barda head to Darkseid's fortress on Apokolips in order to find information on where Superman is transported to.
1x11 - Play Date
March 4, 2017
When the Justice League Watchtower is invaded by Toyman and his army oftoys, Cyborg, Wonder Woman, Superman, and Batman are turned into players in a twisted version of a fighting game, and now Cyborg will need all of his gaming skills to get out of this one.
1x12 - Repulse!
March 11, 2017
Superman has been infected by the "Repulse", who was revealed as Lex Luthor, and has now become the new Repulse. As Wonder Woman and Hawkman try to find a way to save him, Superman must remove those nanobots from his body by sending them into a black hole before he gets pulled into it as well.
1x13 - Trick or Threat
March 18, 2017
Cain the Caretaker tells the audience a Halloween story about the House of Mystery, where Batman, Zatanna, Constantine, and Doctor Fate are turned into 10-year-olds by Klarion the Witch Boy. Now, the 10-year-old Justice League must find a way to defeat Klarion, turn them back to normal, and escape the House of Mystery before it disappears by midnight.
1x14 - Speed Demon
March 25, 2017
After defeating Harley Quinn, Batman and Zatanna encounter Brother Night who used his dark magic to control the Batmobile and kidnapping Zatanna. With the help of Etrigan the Demon, Batman must save her, stop the Batmobile, and defeat Brother Night.
1x15 - Hat Trick
April 8, 2017
Felix Faust steals Zatanna's hat in order to free a massive demon and get his youth back. While Batman and Etrigan face off against the demon, Zatanna uses every trick in her arsenal to get her hat back from Felix Faust.
1x16 - Luthor in Paradise
April 29, 2017
Lex Luthor and Circe invade Themyscira, home of the Amazons, to obtain a staff that leads to the Fallen Realm and an artifact of the Greek Gods. With help from Superman and Batman, Wonder Woman must find a way to stop those villains before it's too late.
1x17 - Plastic Man Saves the World
May 6, 2017
While Superman, Batman, Cyborg, and Vixen try to stop Brainiac, Plastic Man sneaks into Brainiac's spaceship to destroy the shrink ray and save the world in order to prove that he is a worthy superhero.
1x18 - Field Trip
May 13, 2017
As Superman gives Blue Beetle, Firestorm, and Stargirl a tour of the Fortress of Solitude, they run afoul with General Zod, Faora, and an unidentified Kryptonian villain who are accidentally freed from the Phantom Zone. Now with Superman trapped inside, the three teen heroes must work together to stop the Kryptonian villains.
1x19 - Rage of the Red Lanterns
May 20, 2017
Lobo stole the rings from the Red Lanterns and pits Atrocitus, Zilius Zox and the rest of the Red Lanterns against Batman, Superman, and Wonder Woman in order to get a score. After Lobo unlocked the Spider Gauntlet's power, the Justice League and the Red Lanterns must team up to defeat him.
1x20 - Freezer Burn
May 27, 2017
Mr. Freeze flies on his aircraft to freeze the entire Gotham City using Killer Frost as his power source. While Batman deals with Mr. Freeze, Firestorm will have to save Killer Frost and develops a crush on her at the same time.
1x21 - Inside Job
June 3, 2017
In a Fantastic Voyage-like adventure, Atom shrinks Batman and Wonder Woman, so they can enter Superman's bloodstream and destroy a lethal nanite virus.
1x22 - The Trouble with Truth
June 3, 2017
The JLA find themselves in danger of losing Wonder Woman when the goddess Athena comes to Earth with an offer Diana can't refuse -- filling the position of the Goddess of Truth on Mt. Olympus.
1x23 - Double Cross
June 10, 2017
In order for Batman to lure Deadshot into a trap, he has Plastic Man pose as Two-Face. Things go well at first until the real Two-Face escapes from Firestorm's custody.
1x24 - Battle for the Bottled City
June 17, 2017
The Atom shrinks Superman down to microscopic size so that he can enter the Bottled City of Kandor but when Brainiac breaks into the Fortress of Solitude, defeats Cyborg, and reclaims the bottle, Atom must try to stop Brainiac on his own.
1x25 - Garden of Evil
June 24, 2017
When Swamp Thing has a blind date with Poison Ivy which leads to her controlling him in her plot to overrun Gotham City with plants, Batman works on an antidote to free Swamp Thing from Poison Ivy's control. Meanwhile, Poison Ivy is collaborating with Harley Quinn to help her keep Swamp Thing in check. So Superman, Firestorm, and Vixen work to fight Poison Ivy and Harley Quinn on their home turf.
1x26 - All Aboard the Space Train
July 1, 2017
In a strange turn of events, the JLA enlist the help of Space Cabbie and Jonah Hex to stop the hijacking of an intergalactic space train.
1x27 - Time Out
July 8, 2017
Batman teams up with Booster Gold when an alien creature starts literally eating up time.
1x28 - The Fatal Fare
July 15, 2017
Space Cabbie inadvertently learns about a great threat to the Justice League when one of his passengers turns out to be Darkseid.
1x29 - Mxy's Mix-Up
July 22, 2017
As the Justice League tries to protect the United Nations from Gorilla Grodd gorilla army, Mister Mxyzptlk pops up from the fifth dimension and thinks it would be great fun to....
1x30 - Supernatural Adventures in Babysitting
July 29, 2017
Stargirl has to enlist Constantine's help when Klarion the Witch Boy takes the place of the boy she's supposed to be babysitting...
1x31 - Booster's Gold
August 12, 2017
Green Arrow becomes involved with Booster Gold when he discovers that the self-centered superhero has brought dinosaurs back from the past for a money-making venture.
1x32 - Boo-ray for Bizarro
August 19, 2017
The Justice League is back, "with lightning-paced action and heroics.” This show will be including everyone: Superman. Batman, Wonder Woman, Hawkman, Green Arrow, Zatanna
1x33 - Best Day Ever
August 26, 2017
Joker frees Luthor with a mother box and forces him to spend the day together, hopping all over the world, with the Justice League hot on their trail trying to catch up.
1x34 - The Cube Root
September 2, 2017
When a mysterious alien abducts Mr. Terrific, Batman, Luthor and two of the brainiest villains in the universe, he puts them to a test to discover who is the smartest among them.
1x35 - Superman's Pal, Sid Sharp
September 9, 2017
Reporter Sid Sharp has aspirations on becoming a superhero.
1x36 - Superman Red vs Superman Blue
September 16, 2017
Luthor comes up with a new device to defeat Superman. But the kryptonite emitter has the unexpected ability to, once hit, separate each Justice Leaguer in two, one passive and good (blue), the other aggressive and mean (red).
1x37 - The Ringer
September 17, 2017
Sinestro's ring is suddenly much more powerful than usual, so the Justice League sends a microscopic Atom into his ring to find out what the cause might be.
1x38 - Forget Me Not
September 30, 2017
When Firestorm discovers that League members have no memory of who they are, it's up to him to round them up in their secret identities and convince them they are superheroes.
1x39 - The Brain Buster
October 7, 2017
A mysterious creature abducts Batman, Mr. Terrific, Luthor and two of the brainiest villains in the universe to put them to the test to discover who is the smartest among them.
1x40 - E. Nigma, Consulting Detective
October 14, 2017
When the Joker traps Batman, the Justice League allows Riddler to help them find him.
1x41 - Harley Goes Ape!
October 21, 2017
When Gorilla Grodd takes control over Titano, only Harley Quinn can reach him.
1x42 - Phased and Confused
October 28, 2017
When members of the Justice League are affected by the Phantom Zone ray and become phantom-like, their only hope for freedom is to somehow get a message to Booster Gold.
1x43 - It'll Take a Miracle
November 4, 2017
Batman needs help from the new God Mr. Miracle to stop one of Darkseid's evil plans. But Batman first has to catch the universes greatest escape artist.
1x44 - System Error
November 11, 2017
Trapped in a “pocket dimension” the Justice League has to fight in an endless simulation that Darkseid can reset over and over again. Its up to the Batman to come up with an escape plan and contact the Justice League?
1x45 - Race Against Crime
November 18, 2017
Superman and Flash race for charity only to fall into a trap set by Lex Luthor. With the help of time traveling supervillain Chronos, Luthor has build a "time" suit that allows him to control everyone's speed.
1x46 - Party Animal
December 2, 2017
Green Arrow and Plastic Man just caught Solomon Grundy, who ends up with them at the the annual Justice League Christmas party, what can go wrong? It all works out with help of Batman, the Flash and the spirit of Christmas. Although Green Arrow tries his best, the rest of the League decides to go to the S.T.A.R. labs Christmas party after all.
1x47 - Watchtower Tours
January 6, 2018
When Booster Gold starts to secretly give tours of the Watchtower to make some extra cash, he inadvertently brings in at least one super-villain disguised as a tourist.
1x48 - Barehanded
January 13, 2018
When Green Lantern leaves his ring in an intergalactic restroom after washing his hands, he discovers it's gone, leading him on a wild chase for the aliens who might have taken it.
1x49 - Captain Bamboozle
January 20, 2018
Mr. Mxyzptlk decides to create some mischief by granting Shazam's well-meaning Uncle Dudley with superpowers bigger than anyone in the league.
1x50 - Keeping Up with the Kryptonians
January 27, 2018
Mr. Mxyzptlk shows Supergirl and Superman that their innate goodness might not be so pure when he takes them to a parallel world where their counterparts are impossibly aggressive and spoiled.
1x51 - Unleashed
February 3, 2018
While the Justice League is away on a mission, Plastic Man is not only left in charge of the Watchtower, but also of Krypto Superman's not so ordinary dog.
1x52 - She Wore Red Velvet
February 10, 2018
When Booster and the Justice League come under attack by a mysterious and unrelenting new villainess known as Red Velvet, Booster comes to realize she's actually the fiance he left at the altar in the future.