What’s a dumb fact about your OC that canonically makes sense?
Mason can’t and won’t use any weapons other than Blood Eraser (aka Walley, sword in 3rd pic and Walley in 4th) and Killer Picxe (aka James, Pickaxe axe in 3rd pic, and James in 4th) because the two are VERY significant to not only his life but also just in general. Using inanimate objects over soul powered weapons is basically calling the person in the weapon useless and a complete insult & disgrace to the weapon.
Something else that’s canon is that Mason is given weapons whenever he passes by towns because of his image and what he’s trying to do for human kind. But he can’t use the weapons so what does he do? He hands them to the 6th member of the Freestylers, the weapons maniac Dannomic (5th and 6th image (6th is an older version of Danny) who uses all the weapons Mason gave him.