Steve Rogers has seen many things in his 89 years. He was the first and most successful recipient of the Super-Soldier Serum and fought alongside the Invaders during World War II. Following the end of the war, Steve spent time in the service of Nick Fury and S.H.I.E.L.D. prior to its transformation into a mutant-run organization.
As time has passed, Steve withdrew from the public eye, even though most people remember him and know who he is. Many mutants believe he was never truly given a serum and that he was in fact, one of the first mutants. With most of his friends and family dead and gone, Steve spends his time quietly, alone in his apartment in Brooklyn. For him, there will be no more wars for him as he officially retired.