Bold Fighter on Grima or L Hector?

Bold Fighter the one with less bulk. Bulk is good for both player and enemy phase builds, but better geared towards enemy phase builds, because you have a take a hit before enemy phase builds start wreaking havoc. If you already have Grima with a Breath ability, then just give it to L!Hector, since Breath skills are enemy phase, and work better with Vengeful Fighter. You can try a mixed phase build with Bold and Breath, but it won't be as effective as a full on enemy or player phase build.

Not a straight answer but bold fighter L.Hector with QR is so disgustingly cheap it makes me laugh. You'd probably get so many defense wins. Just make sure no armour march so he can't run too far away