Jason Momoa
Joseph Jason Namakaeha Momoa is the full name of the guy who played Khal Drogo in the Game of Thrones TV show. This was not his last role in the industry either. The star has since gone on to play Aquaman or Arthur Curry in a number of movies in the DC Extended Universe franchise as well.
Sylvester Stallone
In the past few decades, Sylvester Stallone was able to cement his status as an acting icon by working on hit series like Rocky and Rambo. It is hard to believe that he started out as a struggling actor who moved to New York City in 1969. He got his big break when he played the boxer.