#sidekicks

Marvel: So first of all, Bucky never actually fully died. His body was picked up by a Soviet submarine, and they froze it immediately to preserve it. Then back in Russia they brought it back to body temperature and resuscitated it and managed to get a heartbeat back. He had severe amnesia and couldn't remember anything except reflexes and how to fight, so they eventually made him into an assassin and froze him between missions and that's how he's still alive and still young in the 21st century.