Arnold Schwarzenegger is a famous bodybuilder who rose to fame in the 1970s. He won the Mr. Universe title at age 20 and went on to win the Mr. Olympia contest seven times. He is also known for his acting career, starring in films such as The Terminator and Commando. Schwarzenegger has become an icon in the bodybuilding world and is widely considered one of the greatest bodybuilders of all time.