Nightwing

Dick Grayson is the first Robin, Batman's original sidekick, who grew to become the independent hero Nightwing, a leader of the Teen Titans, and even briefly took over as Batman. Orphaned after his parents were murdered, he was adopted by Bruce Wayne, trained in combat and detective skills, and became a key member of the DC Universe, known for his acrobatic abilities, leadership, and optimistic personality. Nightwing is widely considered the "heart" of the DC Universe. Unlike his mentor Batman, who leans into darkness and brooding, Nightwing actively channels his tragic past into fierce optimism, resilience, and compassionate leadership