9 Secrets of Sylvester Stallone’s Rocky

Rocky, 40 years old this year, is one of the all-time American classic movies and one of the two career defining performances of Sylvester Stallone. In a nation partial to underdogs, Rocky Balboa was one of the underdoggiest.

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The character is immortal, to the extent that they released a new film starring the Philadelphia pugilist—Creed—just last year.

To celebrate four decades of Rocky’s journey, here’s 9 things you probably didn’t know about his debut.