Fan Casting Batman and Robin Beyond

After a collage student named Terry Mcginnis loses his home and family when his universe is destroyed Bruce Wayne takes him in now that they all live in the Dc/Marvel universe. Terry ends up becoming the new Batman and Bruce Wayne's son Damien becomes the next Robin. The movie ends with the second Joker who is actually Tim Drake who the first Joker tortured and traumatized until he went crazy trying to kill Terry but luckily Damien pushes him down a waterfall.