Colleen Wing is a fictional character appearing in American comic books published by Marvel Comics. Descended from a family of samurai, Wing is a Japanese martial artist who avenged her grandfather's death with the help of the superhero Iron Fist. After arriving in New York City, Wing befriended former police officer Misty Knight with whom she started a private investigation agency. The two would later form the crime fighting duo, the Daughters of the Dragon. As private investigators, Wing and Knight frequently work with the Heroes for Hire duo Luke Cage and Iron Fist. In the 2010 Daredevil storyline "Shadowland", Wing becomes the leader of The Nail, a splinter group of The Hand ninja clan.