I’m that anon that asked if you wanted help with him!
The first thing I thought of was more a personality trait then anything. He’s the kind of weapon who is an asshole to the people he cares about, but he won’t let anyone else be an asshole to them. Like, I can mess with them to my hearts delight but if you so much as even tap them the wrong way I’m going to rip you apart pecies by pecies.
He’s a jerk to everyone, but at the same time, he understand when not to mess with people. Like, someone super powerful or someone whose on the breaking point of snapping and killing everyone.
When he finds out someone hurt or upset his friends, he’s calm on the outside and what he does is basically find the one who did it, normally alone, and turn them into a literal pile on the ground.
He loves inflicting pain on those who he deem useless, or he just doesn’t like.
I like the saw for feet thing, same with only one real hand. I’m not sure what to do with physical stuff, sorry.
I hope this helps! If I come up with more I’ll submit them!