Colleen Wing was born to Professor Lee Wing and a Japanese woman, whose name has not been given. Colleen's mother apparently died very early in her childhood, and then her father became busy with teaching. She was then raised in Japan by her grandfather Kanji Ozawa. Kanji taught Colleen the ways of a samurai, in which she became highly skilled.

Colleen Wing shortly dated Cyclops, leader of the X-Men, when Jean Grey was assumed dead.

Colleen went back to New York to visit her father and upon arrival she was caught in a gun battle by Manhattan police and thugs. She was then rescued by Misty Knight, who eventually became her best friend. Later on, Knight's right arm became severely injured and ultimately had to be amputated. Colleen encouraged Knight to overcome her depression and start living life again. Knight acknowledged Colleen's advice, and she then replaced her amputated arm with a bionic arm.

Colleen Wing and Misty Knight created an association as private detectives and called it Knightwing Restorations, Ltd. Because of Wing and Knight's expertise in martial arts, Knightwing Restorations was renamed Daughters of the Dragon.

When the Superhuman Registration Act became law, Misty Knight and Colleen were contacted by Iron Man to start up a new Heroes for Hire in order to capture superhumans that have not registered.