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Captain America First confrontation: Unknown Injected with an experimental super-soldier serum during World War II, frail Steve Rogers became the exemplar of human physical perfection. Armed with an unbreakable shield, he is now Captain America. |
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Sharon Carter First confrontation: Unknown Inspired by the tales of Captain America and her sister Margaret "Peggy" Carter, she decided to work for S.H.I.E.L.D. |





