Sherlock Holmes I think he also has had the most movie and tv appearances of any fictional character so he could be the most famous fictional character period. Other contenders may be Dracula or Tarzan.
"Learn from me, if not by my precepts, at least by my example, how dangerous is the acquirement of knowledge and how much happier that man is who believes his native town to be the world, than he who aspires to become greater than his nature will allow." Frankenstein