Nightshade is a fictional character, a comic book superheroine published by DC Comics. Created by Joe Gill and Steve Ditko, the character first appeared in Captain Atom v2 #82 (September 1966) originally published by Charlton Comics.
Eve Eden is the daughter of a senator and an extra-dimensional queen who inherited the ability to manipulate shadows and slip through the Shadows to other realms from her mother. Her mother was the deposed queen of the Land of the Nightshades who had been forced from her lands in a coupe which resulted in the death of the rest of the royal family. Eve has worked with many teams and organizations as she strives to use her powers for good, having moved to Washington DC to become a legitimate hero and offer her services as a government agent. Among the many teams and organizations she's been part of are the Central Bureau of Intelligence, Task Force X, Living Assault Weapons (L.A.W.), InterC.E.P.T., and Shadowpact.