Arnold Schwarzenegger is an Austrian and American actor known for his roles in action films, as well as a successful businessman and film producer. He first gained international fame as a professional bodybuilder, winning multiple Mr. Olympia titles before transitioning to a career in Hollywood. Schwarzenegger later entered politics and served as the 38th governor of California from 2003 to 2011. His career spans several fields, including entertainment, sports, and public service, making him a prominent figure in both the United States and Austria.