The Justice League 3000 comic series saw Batman resurrected via a clone. Both Batman and the Justice League have gone through numerous transformations over the years. In Elseworlds stories, the Dark Knight has become a vampire and a version of Doomsday known as the Devastator, while on TV there was the campy fun of the 1960's Batman series, and more recently there was Gotham, which explored his origins. Likewise, George Clooney's smirking take on the superhero in Batman & Robin has little to do with Christian Bale's tortured take in the Dark Knight trilogy.
The Justice League was originally called the Justice Society Of America, which included team members like Jay Garrick's Flash, the Atom, and Green Lantern. The group was later redubbed the Justice League, with it's most famous members consisting of Batman, Superman, Green Arrow, and many others. The team featured in the Super Friends cartoon and the excellent 2001 animated series, which was later retitled Justice League Unlimited. The group hasn't had great luck in live-action, following the famously terrible Justice League Of America TV pilot from 1997 and the 2017 Justice League movie, which received a very mixed reception.
Like the title implies, Justice League 3000 takes place in the distant future, where the famed superheroes of old are long dead. In this bleak future, a group of beings called The Five rule the world and imperfect clones are created of Batman, Wonder Woman, Superman, Flash and Green Lantern to challenge them. However, these clones lack the powers, personalities and - most importantly - the heroism of their predecessors. Superman has no heat vision and can't fly, the new Barry Allen lacks the humor of the old Flash and Green Lantern lacks his ring. The Justice League 3000 Batman is arguably the most complete of the bunch, and while the comic never reveals how the heroes originally died, this Batman recalls and refuses to share details.
Justice League 3000 is somewhat comic in tone and isn't afraid to play up the dark humor of the concept. Former friends Batman and Superman hate each other, Barry Allen dies more than once and they later learn a hellhole prison planet they land on used to be Earth. If that wasn't traumatic enough, they find the cloning process involved injecting volunteers to become the heroes, with Batman originally being a man named Joshua N'Obi.
Despite the bleak odds and group disharmony, the new Justice League defeat The Five but face other threats. The Justice League 3000 Batman was given a nifty redesign too, with his logo and cape featuring red coloring. This distinctive version of the suit later featured as a skin for the video game Batman: Arkham Knight.