[s4e13] The Joining: Part 2 -

Batman and J'onn attempt to infiltrate Wayne Industries to use its satellites to disrupt the Joining's signal.

With the help of Lucius Fox and Alfred, Batman successfully activates the satellites, causing the Joining’s ships to crash and shutting down the invasion for good. Key Characters & Cast Voice Actor Bruce Wayne / Batman Rino Romano Dick Grayson / Robin Evan Sabara Barbara Gordon / Batgirl Danielle Judovits Alfred Pennyworth Alastair Duncan Martian Manhunter Dorian Harewood Lucius Fox Louis Gossett Jr. Major Impact & Trivia [S4E13] The Joining: Part 2

The robotic alien hive-mind known as has launched a full-scale attack on Earth. While Martian Manhunter (J'onn J'onzz) warns of the threat, Batman initially tries to stop the invasion alone to protect Batgirl and Robin from danger. Batman and J'onn attempt to infiltrate Wayne Industries

The sound of the Joining's weaponry is an homage to the 1953 film War of the Worlds . Major Impact & Trivia The robotic alien hive-mind

Encouraged by Alfred, Batgirl and Robin disobey Batman’s orders to stay behind and join the fight, eventually holding off robots while Batman hacks the system.