Marty Slacker

An associate of the Joker (who refers to him as "Slacker" due to his habit of playing videogames) and the newest member of his crew (it's never clear how he came to be in the Joker's employ, although Harley Quinn may have had something to do with it ). Marty is an expert at robotics and computer hacking. When not helping Joker, he is playing a videogame where his character is Captain Slash. Like the rest of the Joker's posse, Marty is arrested at the end of the episode after nearly being defeated by Joker 2.0, whom he was indirectly responsible for creating.