Steve Rogers

Steve Rogers (legal name: Steven Grant Rogers), otherwise known as Captain America, is the earliest superhero. Born on July 4th, 1918, to his father and Sarah Rogers, he was sickly and weak from infancy. Despite this, he became childhood friends with Bucky Barnes, and after the two of them presented, her as an alpha and him as an omega, they got married when he was sixteen in 1934.
During WW2, Bucky went off to fight, as she felt it was her duty. Steve, as an omega and a sickly one at that, having never grown out of it from infancy, was rejected again and again to go off to fight. This changed when he met Dr. Abraham Erskine. With his super soldier serum, he was able to become Captain America, which was to his advantage when Bucky was captured by HYDRA as a POW. Coming to her rescue with the Howling Commandos, she became friends through him with Howard Stark and Peggy Carter, although she did not like Howard due to his infatuation with Steve and Steve had to convince her to be polite to him multiple times.
After Bucky's legendary fall from the train, Steve crashed the plane containing the bomb meant for New York into the Arctic, as in canon. Howard spent the rest of his life trying to find him, but was never successful. It is believed by the characters in-universe that Steve himself is dead – but of course, the reader should know that couldn't be any further from the case.