Joker 2.0 is a cyber version of the Joker made with a duplicate of Joker's personality and brain and was downloaded onto a computer by a mishap with a machine that Joker was using to mentally download money. Before Batman could trap Joker 2.0 inside the computer, Marty, a genius and Joker's new henchman, downloaded him, thereby allowing Joker 2.0 to go wild. Marty informed Joker 2.0 that Wayne Industries had created special nanobots that can self-multiply and take on any shape. Joker 2.0 was hacked into the system and used the nanobots to build a new body. After going to the hideout The old Joker, who was in the hospital after the accident, had escaped and returned to his hideout and met the Joker 2.0. The Joker's henchmen could not choose which one to follow, with both Jokers deciding to become partners. Unbeknownst to both of them, each planned to double-cross the other. Later, they both committed crimes in Gotham Xity, making it harder for Batman to stop them. Joker 2.0 eventually decided to take over Gotham and get rid of Batman, Robin, and the original Joker, eventually growing into a giant body. Robin, finding out that Marty was the Captain Slash character in an online videogame, came up with an idea. Robin told Batman that Joker 2.0 could be trapped inside the videogame. Batman, in the Bat-Bot, sent a signal from Joker 2.0 into the computer, causing Joker 2.0 to be trapped inside the videogame forever. Joker 2.0 was later seeing being defeated by Nightwing, Robin's character in the videogame.