Captain America is a superhero who has been around for many years, almost eighty years. Many characters have come into Captain America’s life throughout his years being in the movies and various comics. Captain America’s alter ego is Steve Rogers. Like most superheroes, their alter egos are weak and no one would ever expect to be a superhero. He has partnerships with several people.
These include Black Widow, Bucky or Rikki Barnes, Sharon Carter, Falcon, Peggy Carter, Bucky or James Barnes, Jack Flag, Free Spirit, Nomad or Jack Monroe, Bucky or Rick Jones, Sharon Carter and Demolition Man. There are countless people who have encountered Captain America. There is really no way to count all of those people or superheroes.