Yep, his Critical Hit Bonus is calculated Completely through his Strength. (After the initial +50% he gets from his innate Bonus) Setting his Strength to 99 I saw his normal attacks jump to anywhere from 500-800 but his critical hits were 900-1300. I would say the formula might be a little strange... Str/20 ?x? Innate Bonus = Critical Damage. I say multiply because when his Bonus is set to 0 he deals no extra damage with a Critical Hit even at 99 Strength. With his Critical Hit Bonus set to 10 he deals upwards to 700-1000 damage per hit. So it seems to be Str/20 (maybe even more) x 50 = Critical Hit Damage.