Each of Jin Yong's main heroes from his major novels had a different personality, and one manifestation of this is the tendency to kill. Killing was an unavoidable part of being a member of the wuxia society. To uphold justice and protect the innocent meant, at times, taking the lives of evildoers. Nevertheless, some of the heroes approached this with more trepidation than others (no hero worthy of the name *enjoyed* killing, but some were more willing than others to do it if he believed it necessary). Let's rank the heroes by their tendency to kill.
The scale is from 1 to 10. A "1" means extremely reluctant to kill, and "10" means fully prepared and willing to kill if the situation warrants it (with no regret or feelings of guilt/shame afterwards).
DEMIGODS & SEMIDEVILS
Kiu Fung: 8
Hui Juk: 2
Deun Yu: 1
LEGEND OF THE CONDOR HEROES
Gwok Jing: 5
RETURN OF THE CONDOR HEROES
Yeung Gor: 6
HEAVEN SWORD & DRAGON SABRE
Cheung Mo Gei: 2
STATE OF DIVINITY
Ling Wu Chung: not familiar enough with character to be certain, although from what I do know, I'm guessing about 5-6.
CRIMSON SWORD
Yeun Sing Chi: not familiar enough with character to judge
DUKE OF MT. DEER
Wai Siu Bo: 9
BOOK & SWORD: GRATITUDE & REVENGE
Chan Ga Lok: not familiar enough with character to judge, but perhaps 5-6 based on what I do know
FLYING FOX OF SNOWY MOUNTAIN
Wu Fei: not familiar enough with character to judge
What are your rankings?