Black Widow: Originally one of the most dangerous and prolific S.H.I.E.L.D. agents, Natasha Romanoff, a.k.a. Black Widow, has found her true family alongside her fellow Avengers. Though Romanoff's dark past still haunts her, she now uses the formidable skills that were once forcibly ingrained in her to defend the innocent.
Crossbones: Once a high level agent a S.H.I.E.L.D., Brock Rumlow, revealed his true colors was an enforcer for HYDRA when the evil agency threatened to destory S.H.I.E.L.D. from within. Since the climactic battle, the dangerous mercenary no calling himself Crossbones has hidden underground, striking from the shadows and selling his skills to the highest bidder.