Shadow-Thief

Born and raised in Japan, Carl Sands used the ninja skills he learned as a boy to become a professional thief. Hired by renegade Thanagarian police chief Byth to steal the ship of then Hawkman and Hawkwoman Katar and Shayera Hol, Sands was given a special suit that transformed him into a living shadow, allowing him to slip into closed areas with ease. After being defeated time and again by both the Silver Age Hawkman and his predecessor the Golden Age Hawkman, Sands sold his soul to the demon Neron for greater powers. Both even with these abilites, Hawkman manages to show Shadow Thief the light of justice. (The whole him being the manifestation of Hawkman's inner darkness was only canon to Justice League Unlimited).

Powers
In shadow form, Shadow Thief is two dimensional and intangible. He can also turn people and objects into shadows.