I think it'll be Genghis Khan. From scratch he built a nation that stayed. Chandragupta maurya will be another figure for the same reason. Romus or Numa Pomphilus if not fictional characters qualify. M.K. Gandhi who could make opposing forces work together is another
leadership means to lead people, in difficult times and yet acheive results. I think Khan should be number one. Success part is more or less subjective, but I think Khan was a success, a nation that lasted more than 300years.(exact I forgot).
I believe Jesus, was one of the greatest teachers..as he taught unconditional love, defenseless, courage, and strength in his convictions.. He never once played the victim.. I would also mention Squanto, Mahatma Ghandi, Yogananda, Babaji, Mother Teresa and others..
I personally know a man who contributed thirty five thousand dollars a month to a drug rehab/discipleship ministry until he went bankrupt. Guess what? He's worth millions yet again - he had faith that what he was doing was what he should be doing.
No, I don't always agree that that person, and had a few arguments with the guy - but he was and is a hell of a leader.