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.

Justice League Action Season 1 Episodes...

• s01e01 - Classic Rock (1)
• s01e02 - Power Outage (2)
• s01e03 - Night of the Bat (3)
• s01e04 - Abate and Switch (4)
• s01e05 - Follow That Space Cab!
• s01e06 - Nuclear Family Values
• s01e07 - Zombie King
• s01e08 - Galaxy Jest
• s01e09 - Time Share
• s01e10 - Under a Red Sun
• s01e11 - Play Date
• s01e12 - Repulse!
• s01e13 - Trick or Threat
• s01e14 - Speed Demon
• s01e15 - Hat Trick
• s01e16 - Luthor in Paradise
• s01e17 - Plastic Man Saves the World
• s01e18 - Field Trip
• s01e19 - Rage of the Red Lanterns
• s01e20 - Freezer Burn
• s01e21 - Inside Job
• s01e22 - The Trouble with Truth
• s01e23 - Double Cross
• s01e24 - Battle for the Bottled City
• s01e25 - Garden of Evil
• s01e26 - All Aboard the Space Train
• s01e27 - Time Out
• s01e28 - The Fatal Fare
• s01e29 - Mxy's Mix-Up
• s01e30 - Supernatural Adventures in Babysitting
• s01e31 - Booster's Gold
• s01e32 - Boo-ray for Bizarro
• s01e33 - Best Day Ever
• s01e34 - The Cube Root
• s01e35 - Superman's Pal, Sid Sharp
• s01e36 - Superman Red vs Superman Blue
• s01e37 - The Ringer
• s01e38 - Forget Me Not
• s01e39 - The Brain Buster
• s01e40 - E. Nigma, Consulting Detective
• s01e41 - Harley Goes Ape!
• s01e42 - Phased and Confused
• s01e43 - It'll Take a Miracle
• s01e44 - System Error
• s01e45 - Race Against Crime
• s01e46 - Party Animal
• s01e47 - Watchtower Tours
• s01e48 - Barehanded
• s01e49 - Captain Bamboozle
• s01e50 - Keeping Up with the Kryptonians
• s01e51 - Unleashed
• s01e52 - She Wore Red Velvet

Justice League Action Show Summary

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, Shazam, the Flash, Blue Beetle, Plastic man, Martian Manhunter, Lobo, Zatanna, the Demon, Dr. Fate and fan favorites like Harley Quinn and many more. Justice League Action, will also reunite the Batman Animated Series voice talents of Kevin Conroy as the Batman and Mark Hamill as the Joker.