Aired: 9/22/2007
Batman and Superman find themselves teamed up when Lex Luthor begins his operations in Gotham City to take down his arch-nemesis, employing a horde of the Batman's villains to do so.
Aired: 9/29/2007
Batman and Robin must battle Superman, who is under Lex Luthor's mind control, as the villain plans to launch a wave of robots and take over the world's armies.
Aired: 10/6/2007
Batman welcomes another member of the Justice League to Gotham – Green Arrow. The two team up when Vertigo, a villain who can affect people's sense of balance, arrives in the city with a diabolical plan.
Aired: 10/13/2007
Firefly tries to upgrade his powers with the aid of his new girlfriend Blaze, but is exposed to radioactive phosphorous and takes on a new more dangerous identity as Phosphorus.
Aired: 11/3/2007
Batman and Robin team up with the Flash to thwart Mirror Master's plans to trap everyone in their own mirror image.
Aired: 11/10/2007
Gotham citizens are bursting into hysterical laughter and dumping stolen goods into the river, and Batman is soon on the trail of the Joker.
Aired: 12/8/2007
Nearing defeat by his arch-foe Sinestro, Green Lantern sends his power ring to fellow Justice Leaguer Batman. Unfortunately the ring is instead intercepted by the nefarious Penguin.
Aired: 12/15/2007
A strange mishap causes the Joker's mind and personality to be downloaded into a computer, enabling him to control the new WayneTech Nanobots. This creates a new and improved body which attempts to destroy Batman, Robin, and the original Joker.
Aired: 2/2/2008
A trio of college misfits use stolen mutagens from Dr. Kirk Langstrom to transform themselves into animal forms and get revenge on those who have scorned them.
Aired: 2/9/2008
The Batman meets his opposite in the form of Wrath and his partner Scorn who are helping Joker, Penguin, Killer Croc, and Ventriloquist and Scarface with a job. Batman and Robin must stop their evil counterparts.
Aired: 2/16/2008
When Black Mask hires Hawkman's arch-nemesis the Shadow Thief to break him out of Arkham and assist in the theft of a meteorite, Batman must team up with fellow Justice League member Hawkman to defeat them.
Aired: 3/8/2008
When super-powered members of the Justice League begin disappearing one by one, Batman, Robin and Green Arrow must discover the mystery surrounding their disappearance.
The Joining attempts a second invasion of Earth with the stolen powers of the newly formed Justice League. Only the non-powered heroes Batman and Green Arrow remain to gain back their friends' powers and stand between the Joining and world conquest.
