Fan Casting Diamondback in George Nolfi's Captain America

Very little has been revealed about Diamondback's history. She has stated that she once attempted to make the US Olympics gymnastics team, though it is unknown if she ever competed professionally nor what kept her out of the Olympics. It is known that she is a graduate of the Taskmaster's criminal training academies, though her initial motivations for attending are unknown. In her first documented appearance, she was approached by the criminal Viper and his brother, the Eel, to join their team of snake-themed mercenaries, which Viper dubbed the Serpent Squad. In the Serpent Squad's first outing, Diamondback came into conflict with Captain America and his young partner, Bucky, while attempting to acquire information from Oscorp's Bronx plant's computers. Though defeated and most of the Squad taken into custody, Diamondback (and the rest of the Serpents who had been captured) was released from prison on bail by an unknown benefactor. The charges against Diamondback were apparently later dropped. Diamondback has twice more fought Captain America as a member of the Serpent Squad, although the other Serpents have questioned the intensity of her in-combat flirting with the Captain. She was most recently hired by Captain America to assist in taking down one of the Taskmaster's training facilities. Her work ethic has apparently impressed Georges Batroc, who has indicated that if she tired of the Serpents that he would not mind having her in his Brigade.