6. Sylvester Stallone

Boxing fans know this guy for playing the title character in the 1976 blockbuster film, Rocky. He was 30 years old when he landed this role. During his teen years, Stallone struggled in school and sidelined in his mother’s salon. He reprised his role as “Rocky” in the 2015 spin-off Creed, and sources say he will be appearing in the sequel of Guardians of the Galaxy.