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.
Tom King (comics)
King was chosen to co-write "Grayson" for DC Comics, along with Tim Seeley and Mikel Janin on art. After penning "Nightwing" #30, King, Seeley, and Janin launched "Grayson" on May 2014, featuring Dick Grayson leaving behind his Nightwing persona at age 22 to become Agent 37, a Spyral spy. King and Seeley plotted the series together and traded issues to script separately, with King providing additional authenticity through his background with the CIA.