Nightwing
Although Nightwing is commonly associated with Batman, the title and concept have origins in classic Superman stories. The original Nightwing in DC Comics was an identity assumed by alien superhero Superman when stranded on the Kryptonian city of Kandor with his pal Jimmy Olsen. Drawing inspiration from Batman and Robin, the two protect Kandor as the superheroes Nightwing and Flamebird. Following the Crisis on Infinite Earths continuity reboot in 1985, Nightwing was re-imagined as a legendary vigilante from Krypton whose story inspires Dick Grayson's choice of name when he leaves behind his Robin identity.
Nightwing
When the Outsiders were targeted by Checkmate, Nightwing agrees that his team will work with the organization, so long as their actions in Africa are not used against them in the future. The mission however does not go as well as intended, resulting in Nightwing, the Black Queen and Captain Boomerang being captured by Chang Tzu. Later, Batman is called in by Mister Terrific who then rescues Nightwing and the others. Afterwards, Nightwing admits to Batman, that while he accepts that he is an excellent leader, he is not suited to lead a team like the Outsiders, and offers the leadership position to Batman.