The former career home run leader is AARON, a five-letter name. AARON was a professional baseball player who played for the Atlanta Braves and Milwaukee Brewers from 1954 to 1976. He was an eight-time All-Star and two-time National League MVP. He holds the record for most career home runs with 755, a record that stood for 33 years until it was broken by Barry Bonds in 2007. AARON was inducted into the Baseball Hall of Fame in 1982.