Nightwing

Dick Grayson is a DC Comics superhero, the first and most famous Robin, and later the vigilante Nightwing, who was the adoptive son and crime-fighting partner of Batman before becoming the leader of the Teen Titans. An acrobatic prodigy from the "Flying Graysons" circus act, he became a vigilante after his parents' murder, eventually growing beyond Batman's shadow to lead his own team and become a hero in his own right. He was a circus acrobat whose parents were murdered, leading Bruce Wayne (Batman) to adopt him and train him as Robin. He is the adoptive son of Batman, best friend of Donna Troy, and often romantically linked with Koriand'r (Starfire). He is a leader, detective, and skilled fighter who leads the Titans and operates independently as Nightwing.