Captain America is a super powered human being.
Captain America . Captain America was designed as a patriotic supersoldier who often fought the Axis powers of World War II and was Timely Comics ' most popular character during the wartime period . The character is usually depicted as the alter ego of Steve Rogers , a frail young man enhanced to the peak of human perfection by an experimental serum to aid the United States government 's efforts in World War II . The supersoldier ( or super soldier ) is a concept soldier , often fictional , capable of operating beyond normal human limits or abilities .