Batman uses Killer Croc's real name Killer Crock had tried to turn over a new leaf but Joker’s actions forced him back into the sewers. When Batman confronted Killer Croc, he attacked him. After Bruce defeated Waylon, he took him and his mutated friends to Arkham Asylum. There, he ensured that Waylon's friends, who were exposed to toxic chemicals, received the best treatment. Batman talks to Killer Croc and assures him that the people they abducted are safe. He tells Croc that he put up a hell o