"When his parents were gunned down in front of him, young Bruce Wayne resolved to rid Gotham City of the criminal element that took their lives. He trained extensively to achieve mental and physical perfection, in addition to mastering martial arts, detective techniques, and criminal psychology. Dressing as a bat to prey on criminals' fears and operating out of his secret Batcave below Wayne Manor, Batman fights crime with the aid of specialized gadgets and vehicles."
After Darkseid's apparent defeat, invaders from another dimension began appearing. Batman intervened and stopped a rampaging Flash from killing a defeated Kano. Having no chance, he overtakes him with his taser. Bringing Flash to the Bat Cave, he tried to run some tests on the rage that consumed his teammate, but Flash suddenly disappeared and was replaced with the ninja spectre Scorpion. Thinking the Dark Knight was Sub-Zero in disguise, Scorpion attacked Batman despite his dazed shape and was captured. When another power anomaly appeared in Gotham, Batman was forced to take Scorpion with him. Arriving in the city, he was then forced to fight his archnemesis, the Joker. Defeating Joker, Batman was surprised by the sudden appearance of Liu Kang. The rage in the monk made Batman appear as Shang Tsung and another fight ensued with Batman as the victor, but at the cost of Scorpion and Joker escaping. Via Green Lantern, Batman took Kang to the U.N. orbital station, where he discussed that Earth might be in for another invasion. Raiden, the god of thunder, suddenly appeared and demanded Kang's release. Batman refused without obtaining answers and in a following fight, he was able to resist the god with his insulated armor, but Raiden still got away with Kang.
Returning to the Cave, Batman found Sub-Zero searching for Scorpion. Even with the rage powering him up, Batman was defeated by the Lin Kuei warrior. Batman then deduced that, through the magic of the two worlds merging, the other heroes and villains were gaining incredible strength. This was demonstrated when Joker defeated Batman in a fight. Subduing the maniac clown, Batman brought them both to the formed team of heroes and villains where they learned that a being named Dark Kahn was causing the worlds to merge and everyone falling into the rage. Batman again fought Sub-Zero when the defenders of Earthrealm and the D.C. heroes fought in a final battle. The Dark Knight calmed Superman when he too fell to the rage and nearly killed both Batman and Lex Luthor. Superman then teamed up with Raiden to defeat Dark Kahn and separate the worlds. Shao Khan remained and was banished to the Phantom Zone.