Muhammad Ali, born Cassius Marcellus Clay Jr., was one of the greatest boxers of all time. Known for his lightning-fast footwork, powerful punches, and charismatic personality, Ali became a global icon in and out of the ring. He won the heavyweight championship three times and was famous for epic fights like the "Rumble in the Jungle" and the "Thrilla in Manila." Beyond boxing, Ali was a civil rights activist, poet, and humanitarian, standing against racism and the Vietnam War. His legacy as "The Greatest" continues to inspire athletes and activists worldwide.