A true leader that leads from who they are will establish an environment where Truth, Humility and Righteousness will prevail.
  -  Truth will set people free from the bondage of misinformation
  -  Humility will create a culture of serving one another
  -  Righteousness will bring justice because things are being done right
However, in my opinion it all starts with being true to one's own calling (purpose). Purpose driven leaders will by nature be character-based leaders providing they remain true to their calling.