A British special forces veteran turned butler, Alfred Pennyworth is the most loyal friend and confidant of both Bruce Wayne and Batman.
Not all heroes in Gotham City wear masks. GCPD Commissioner James Gordon is the Dark Knight's greatest ally, and one of his closest friends.
Batman may be the sworn guardian of Gotham City, but the man who makes it possible for the Dark Knight to safeguard its streets is James Gordon. A veteran cop who rose through the ranks by putting his foot down on rampant corruption—even when that stalwart devotion to justice came at great personal cost—Gordon worked tirelessly on Gotham’s police force, eventually earning himself the title of commissioner.
If it’s hard being a super hero, what is it like as a sidekick? The heroes get the glory, while you clean up the mess. You don’t make the decisions and you don’t give orders. So, what do you do if you’re the Boy Wonder to one of the most recognizable super heroes in the universe and you’re looking to break out on your own?
Simple. You become Nightwing.
Barbara Gordon redefined what it meant to be a self-made hero when she crafted her own costume and joined Batman's crusade right under her father’s nose.
The mean streets of Gotham City have a number of guardian angels watching over them. And one of the first—the young woman who turned the Dynamic Duo into the Batman family—was Batgirl. Barbara Gordon has always existed between two worlds: her life at home as the only daughter of Police Commissioner James Gordon and her life swinging from gargoyles as an associate of the Dark Knight and a founding member of the Birds of Prey.
Duke Thomas is the daytime protector of Gotham City, and his metahuman light sensory powers make him unlike any of Batman's other crimefighting partners.
While Batman and most of his allies operate at night, crime in Gotham City is quite different in the daytime, and so requires a different kind of crimefighter. Enter Duke Thomas—a.k.a. the Signal, the brightly colored agent of the Bat who hits the streets when the sun is out and Batman is asleep in his cave.