13 episodes · first aired 2005-02-05
| Still | # | Title | Overview | Air date | Rating |
|---|---|---|---|---|---|
 | 01 | The Cat and the Canary 2005-02-05 | Black Canary convinces Green Arrow to help save her mentor, Wildcat, from his involvement in an underground, super-powered fight club known as MetaBrawl. | 2005-02-05 | 7.0 |
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Ratings shown are community scores. Once OMDB is wired, these become per-episode IMDB values.
| 02 |
The Ties That Bind 2005-02-12 |
Mister Miracle and Big Barda solicit Justice League assistance to free Oberon from Apokolips. J'onn refuses, but Flash decides to help out on his own. |
| 2005-02-12 |
| 6.3 |
 | 03 | The Doomsday Sanction 2005-02-19 | Superman battles Doomsday in the heart of a volcano. Doomsday is revealed to be a modified clone of Superman. Batman probes the Cadmus conspiracy to destroy the Justice League. | 2005-02-19 | 7.4 |
 | 04 | Task Force X 2005-05-21 | Cadmus has recruited a team of supervillains named Task Force X (based on the comics' Suicide Squad) made up of Deadshot, Plastique, Captain Boomerang, and the Clock King. Their mission: steal the Annihilator armor from the Watchtower. | 2005-05-21 | 8.8 |
 | 05 | The Balance 2005-05-28 | To help her magic superhero friends, the God Hermes sends Wonder Woman on a mission to help free Hades from the clutches of Felix Faust. | 2005-05-28 | 6.3 |
 | 06 | Double Date 2005-06-04 | Seeking to avenge the death of her parents, the Huntress enlists the help of the Question in tracking down Steven Mandragora, a mobster in protective custody -- and being guarded by the Green Arrow and Black Canary. | 2005-06-04 | 7.3 |
 | 07 | Clash 2005-06-11 | Captain Marvel joins the Justice League and his innocent presence inadvertently causes friction with Superman. | 2005-06-11 | 7.2 |
 | 08 | Hunter's Moon 2005-06-18 | Shayera, Vixen and Vigilante are lured into an ambush by Thanagarians seeking revenge. | 2005-06-18 | 6.0 |
 | 09 | Question Authority 2005-06-25 | The Question, fearing disaster, decides to kill Lex Luthor to avert it. | 2005-06-25 | 7.8 |
 | 10 | Flashpoint 2005-07-02 | Lex Luthor executes his masterstroke to eliminate Project Cadmus and frame the Justice League. | 2005-07-02 | 7.5 |
 | 11 | Panic in the Sky 2005-07-09 | While the senior Leaguers struggle to respond to the mysterious main gun firing, Amanda Waller orders Galatea to lead a full attack on the Justice League. | 2005-07-09 | 7.7 |
 | 12 | Divided We Fall 2005-07-16 | The Justice League charter members must battle the combined Lex Luthor/Brainiac menace alone. | 2005-07-16 | 7.6 |
 | 13 | Epilogue 2005-07-23 | In the future, Terry McGinnis learns the truth about his birth. | 2005-07-23 | 8.3 |
