Eve was an aspiring ballerina until the Russian government tried to use her to create their own Super-Soldier. She was injected with a serum meant to giver her superhuman strength, but instead triggered latent shadow abilities in Eve due to her mother actually being a refugee from the Darkshade dimension. Eve became trained in the ways of espionage and was given the identity of the Night Widow.
Night Widow is linked to the Darkshade dimension and and can use its energy to teleport. She can also focus Darkshade energies into black energy blasts she calls “Widow stingers”that disrupt the bio-energy field of her target.