The Joining, Part 2

"**The Joining, Part 2**" is the thirteenth and final episode of the fourth season of *The Batman*. It is also the fifty-second episode overall.

## Synopsis

The Joining has launched its attack on Earth and the key to defeating them is Wayne Industries' satellites. As Batman and Martian Manhunter attempt to penetrate Wayne Industries, Alfred encourages Batgirl and Robin to disobey Batman while the battle for Earth begins.

## Plot

Atop Wayne Industries, the Joining robots attack Batman and J'onn while the alien ships spread out across the platform. Batman blows a hole in the roof and escapes downward with Lucius, while J'onn holds off the robots long enough for them to escape in the Batmobile. J'onn then escapes as the explosive Batman left behind detonates. Batgirl and Robin are waiting in the Batcave when Batman returns and informs them of what's going on,while Alfred attends to Lucius' injuries. They all watch in horror as Earth is being torn apart by the Joining. Batman tries to analyze the anti-gravity problem while the replicant Lucius head informs them that the Joining cannot be defeated.

Commissioner Gordon and his men try to stop the Joining without success, while Batman discovers a way to cause the anti-gravity platforms to fall apart based on a failsafe he had installed in the Wayne Industries technology. He'll need to send the failsafe signal through a satellite relay at Wayne Industries and insists on going alone so the others don't slow him down. Batman drives the Batmobile and rushes there. J'onn had sneaked inside then becomes tangible. He says that Batman will have to work with others to defeat the Joining. Robin and Batgirl are feeling down,then Alfred tells Batgirl and Robin to disobey Batman's orders and help him. They proceed to rebuild the platform Batman disassembled. Alfred and Lucius then get an idea on how to help Batman.

The Joker and the other Gotham villains are forced to aid Commissioner Gordon and his men, since the Joining will destroy them all. The two kids then join the fight, having fixed the platform. Batman gets to the Wayne Industries satellite relay, using a short-range handheld device to deactivate the Joining's sentry robots. He tries to activate the signal but the Joining has blocked the signal. Batman contacts Alfred who says that Lucius can access the system but Batman will need to hack the system from inside. Fortunately Batgirl and Robin show up and hold off the robots while Batman hacks into the system to give Lucius access. J'onn fights his way in past the remaining sentry robots and together they hold off the Joining long enough for Batman to access the system just as the Joining ships prepare to band together and wipe out humanity with their superweapon. Batman's hack proves successful, and with the help of Alfred and Lucius, they activate the satellites. The ships crash to earth, shut down for good. The Joining's invasion has stopped.

As reconstruction efforts begin, Batman meets with J'onn and admits that there's something to working as a team. J'onn asks him to join the "others" and they teleport up to a space station where other heroes are gathered: Green Arrow, Hawkman, the Flash, and Green Lantern. Batman knows all about them, having hacked their computer systems as a precaution. However, he admits that it's now time for all of them to get to work... together.

## Cast/Characters

* Rino Romano as Bruce Wayne/The Batman
* Evan Sabara as Dick Grayson/Robin
* Danielle Judovits as Barbara Gordon/Batgirl
* Alastair Duncan as Alfred Pennyworth
* Louis Gossett Jr. as Lucius Fox
* Dorian Harewood as John Jones/Martian Manhunter
* Mitch Pileggi as James Gordon
* Kevin Michael Richardson as The Joker
* Bane
* The Penguin
* Mr. Freeze
* Green Arrow
* The Flash
* Green Lantern
* Hawkman
* The Joining
* Ms. Vintrup (cameo)
* Princess (cameo)
* Melanie's Cameraman
* Thomas and Martha Wayne (photo)

## Events

- Character debuts:

* Hawkman
* Flash
* Green Arrow
* Green Lantern

- The Joining's invasion of Earth is stopped.

- The Lucius robot replica is shut down.

- Batman becomes a member of the Justice League.

- Gotham sustains severe destruction and undergoes long reconstruction.

- Batman discovers the JL Watchtower.

## Trivia

* When the Martian Manhunter brings Batman to the Justice League Watchtower, an exterior shot reveals that from a certain angle, the top of the watchtower resembles the Hall of Justice from the *Super Friends* cartoon.
* The sound made by the Joining's weaponry was taken from the film *War of the Worlds*.
* Unlike other episodes, the opening sequence plays as the episode starts rather than after the cold open.
* This is one of the few times in the series where guns are fired.
* This is one of the few times in the series where Batman is not refered to as *The* Batman.
* Robin jokingly mentions working in Metropolis, the city of Superman.

## Errors

* As the heroes watch the planetary scale destruction on the Batcomputer, one of the panels has the later scene of Batgirl driving her Batcycle to stop a robot, even though Batgirl currently is standing next to Batman.
* When Batman drives the Batmobile out of the Batcave, it is invisible. No Batmobile.