In Gu Long Canon, Little Li Flying Dagger Li Xunhuan is widely considered (by Gu Long himself through narration) as the most righteous of heroes, and hence invincible under heaven. Whether that fact itself is true is debatable but for the sake of argument, are there any other heroes in wuxia (either JY or GL) that could be considered as being MORE righteous than Li? Who would you vote as the MOST righteous of all heroes?
Many might be tempted to answer GJ, but for his involvement in leading the Mongol armies early on, I'd have to disqualify him since he was responsible (blindly following orders or not) for the killing of massive numbers of people.
My vote would probably have to go to Hua Manlou or Hong Qigong.