[@Letter Bee]
Apologies for the belated reply, I am not very used to forum-style correspondence, as opposed to chats.
What I have in mind is an emotionally vulnerable barely-adolescent child who was inducted into the Hammer of Masters very early in his life due to not knowing any better, who is serving the organization faithfully because they provide to him a family and sense of brotherhood and camaraderie that he never would have felt otherwise, and because he is a child, and the free and take-what-you-are-due approach that a position of Arms Master superiority promotes appeals to his young and delicate sensibilities. His Noble Arm is the two-pointed brilliant sabre Zulfiqar, whose power is fairly complex and would take a long to describe in detail and work out with you precisely - but the gist is that when it is employed, a reality-warping aura of enforced peace and pacifism extends all around him, with nobody being able to do any active violence to anyone else when affected. He can selectively turn it off for any given person, but, of course, that'd mean that they can fight back against him just as well as he can harm them.