Kirk Alyn
This man was the first actor to portray Superman onscreen! Kirk Alyn starred in the 1948 serial film Superman. Interestingly, he had no prior acting experience before landing the role of the Man of Steel.
Not only did Alyn pave the way for future adaptations, but he also had an impact on popular culture. In fact, his Superman costume was the inspiration for the iconic look of the character in comic books!