Captain America, real name Steve Rogers, is the only known successful recipient of the so-called "super-soldier serum", which gave him enhanced strength and durability. After his last mission, he was frozen in the Arctic Ocean for over 50 years, and only recently was found and revived. He is patriotic, jingoistic, and deeply conservative (unlike his more liberal Earth-616 counterpart). A tactical genius, he is the Ultimates' field leader and maintains a stereotypical 1940s attitude in the modern post-2000 world.