Christian Bale Batman in the Tumbler

Christian Bale Batman is the Batman from an alternate Universe (the Christopher Nolan Dark Knight Trilogy). He only appears in "Jokers Team-Up". Robin brought him in the Forrestfire Universe to help Batman fight the Jokers. He then stayed in this Universe for a while to hang out with the Forrestfire Batman. Not much is known about what happend to him after that, but he most likely returned to his Universe.