In DC Comics, Robin was the first recruit in Batman’s war against crime, with his flashy yet instantly recognizable outfit being a far cry from the Caped Crusader’s darker-hued and more blatantly scary design. Yet on an alternate Earth featured in the Kingdom Come universe and eventually in DC’s main continuity, the role of Robin gave way to a new vigilante named Red Robin, with this character’s costume eschewing far more closely to Batman’s iconic batsuit than ever before.

https://screenrant.com/robin-costume-kingdom-come-like-batman-redesign-factoid/