Initially taking place in the classic DC animated universe (though it was eventually folded into the main DC Comics continuity) Batman Beyond imagines a futuristic (almost Blade Runner-esque) version of Gotham City in which Bruce Wayne has been forced into retirement by age.
Batman Beyond is one of those properties that has become beloved by fans since its run back in the early 2000s.
Decades after hanging up the cape and cowl, he comes across a talented and brooding teenager named Terry McGinnis and begins to groom the young boy to take his place as the protector of the city.