1. Secret Origins (1)  

First aired: 11/17/2001    Production Code: 1.01

Batman investigates a series of mysterious space signals and finds an alien conspiracy, while Superman is overwhelmed by telepathic alien messages as war-machines land and begin attacking Earth.

2. Secret Origins (2)  

First aired: 11/17/2001    Production Code: 1.02

Green Lantern, Wonder Woman, Flash, and Hawkgirl team up with Superman, Batman, and J'onn J'onzz to defeat the alien invaders, but one of them falls in battle and the others are soon overwhelmed.

3. Secret Origins (3)  

First aired: 11/17/2001    Production Code: 1.03

The heroes race to rescue two of their own before the Imperium gets to Earth and completes its conquest.

4. In Blackest Night (1)  

First aired: 11/19/2001    Production Code: 1.04

'No man escapes the Manhunters.' An alien court sends the Manhunters to bring Green Lantern back for prosecution on the charge of genocide, and the League gets involved.

5. In Blackest Night (2)  

First aired: 11/26/2001    Production Code: 1.05

Believing that Green Lantern is receiving an unfair trial, the Leaguers investigate, while GL's superiors, the Guardians of the Universe, enter as witnesses. But the whole trial may be a ruse.

6. The Enemy Below (1)  

First aired: 12/3/2001    Production Code: 1.06

When Aquaman, ruler of Atlantis, decides he has had enough of the surface-dwellers trespassing in his ocean, the Justice League tries to smooth things over. Aquaman takes Superman's advice and arrives in New York City to speak to the World Assembly, but it soon becomes apparent that he may have been right about the surface-dwellers all along.

7. The Enemy Below (2)  

First aired: 12/10/2001    Production Code: 1.07

Betrayed by his own subjects, Aquaman and the League fight to save Atlantis, the world, and Aquaman's own son against his half-brother Orm's coup.

8. Paradise Lost (1)  

First aired: 1/21/2002    Production Code: 1.10

Wonder Woman returns to Paradise Island to make up with her mother for her rapid departure, only to find the Amazons transformed to statutes. The sorcerer Felix Faust is hold them hostage to force Diana to recover three ancient artifacts.

9. Paradise Lost (2)  

First aired: 1/28/2002    Production Code: 1.11

The League fight to save Paradise Island and Wonder Woman's own mother from Felix Faust and Lord Hades.

10. War World (1)  

First aired: 2/24/2002    Production Code: 1.12

Superman and J'onn are taken prisoner during a rescue mission gone bad, and Superman is forced to compete in a gladiatorial tournament on a distant world while Hawkgirl and Green Lantern try to rescue them.

11. War World (2)  

First aired: 3/3/2002    Production Code: 1.13

Green Lantern and Hawkgirl continue their search for Superman and J'onn, who have discovered a diabolical plot within War World's gladiatorial games.

12. The Brave and the Bold (1)  

First aired: 3/10/2002    Production Code: 1.14

When the Flash is mind-controlled into committing a crime, he and Green Lantern work to clear his name and uncover a sinister scheme.

13. The Brave and the Bold (2)  

First aired: 3/17/2002    Production Code: 1.15

When Gorilla Grodd mentally enslaves a city of humans and prepares to destroy Gorilla City, Green Lantern and Flash try to defeat him while the other Leaguers move to help the ape civilization.

14. Fury (1)  

First aired: 4/7/2002    Production Code: 1.16

A renegade Amazon, Aresia, leads a new incarnation of the Injustice Gang to accumulate the components for a bio-weapon.

15. Fury (2)  

First aired: 4/14/2002    Production Code: 1.17

When the male Leaguers are infected by the same disease sweeping Earth, Wonder Woman and Hawkgirl must defeat Aresia and find a cure.

16. Legends (1)  

First aired: 4/21/2002    Production Code: 1.18

An explosion throws four Leaguers into an alternate dimension where they meet Green Lantern's childhood comic book heroes...the Justice Guild!

17. Legends (2)  

First aired: 4/28/2002    Production Code: 1.19

The League aid the Justice Guild against their arch-nemeses while trying to unravel the secrets of the Guild's world.

18. Injustice For All (1)  

First aired: 9/6/2002    Production Code: 1.08

The League capture a dying Luthor, who breaks out of prison and assembles a group of villains to defeat the heroes.

19. Injustice For All (2)  

First aired: 9/13/2002    Production Code: 1.09

Batman is captured by the villains, who plan on destroying the Watchtower and finding a cure for Lex.

20. A Knight of Shadows (1)  

First aired: 9/20/2002    Production Code: 1.20

The sorceress Morgaine Le Fey and her son Mordred search for the Philosopher's Stone, and the Justice League need the help of the Demon Etrigan to thwart her.

21. A Knight of Shadows (2)  

First aired: 9/27/2002    Production Code: 1.21

Morgaine and Mordred get the Stone and plan to transform England and restore it to its medieval glory.

22. Metamorphosis (1)  

First aired: 10/4/2002    Production Code: 1.22

An old friend of John Stewart's is inadvertently turned into a freak capable of altering his molecular structure, separating him from his girlfriend and pitting him against the League.

23. Metamorphosis (2)  

First aired: 10/11/2002    Production Code: 1.23

The League battle Metamorpho but soon discover that his future father-in-law, Simon Stagg, poses the true menace.

24. The Savage Time (1)  

First aired: 11/9/2002    Production Code: 1.24

When the present is altered, the Justice League must travel back in time to World War II to restore history.

25. The Savage Time (2)  

First aired: 11/9/2002    Production Code: 1.25

A separate League struggle against the Naxis and determine who is responsible for the Axis' technological advances.

26. The Savage Time (3)  

First aired: 11/9/2002    Production Code: 1.26

The Justice League, still divided, battle the Germans on several fronts as Vandal Savage launches his plan to invade America.

Special. A League of Their Own (1)  

First aired: 3/1/2003

A cosmic super-string strikes the JLA Watchtower and Batman calls on Static to charge the damaged power core. The League helps Static against Puff and her new gang and then bring him and Gear up to the Watchtower. When the League are called away on an emergency, Gear and Static are left behind as a freed Brainiac unleashes havoc and plans to assimilate Earth. Gear gets off a signal to the Leaguers and they create a distraction while Static redrains the energy from the core. Gear fills up Brainiac's memory with a soundtrack, giving Static time to complete the plan. They succeed, unaware Brainiac downloaded himself into Gear's backpack. Brainiac launches an attack on Gear ... (to be continued ...)

Special. A League of Their Own (2)  

First aired: 3/8/2003

Richie is under Brainiac's control, while the League discovers a massive download and sends the Flash to track down Richie but he gets captured and "converted". The superspeed Flash slaps control units on the Leaguers but Static's powers short-circuit his thought-control disc, leaving him free. Static ends up fighting the League and slowly freeing them from the control discs, but giving Brainiac enough time to have a controlled Richie manufacture an attack vessel and host body (containing Richie), digitizing everything in Static's city. The League tell Static to go behind as they go after Richie – as the League battle Brainiac clones, Static gets hold of a remote controller for Gear's Backpack and he and Batman get close enough to use it to shut down Brainiac for good.