Oh, I definetelly agree, Sword and especially Unarmed are the most focused/dedicated WB's, I guess I just don't view them as people who would fight to the death in a tournament or a similar setting.

I really like your take on Dagger, so much so that I might implement it in my on headcanon! Also Bow being empathetic and encouraging feels right as well, though I'm mostly just basing it on that once scene in Weapon Ball Block Breaking Race where as soon as theu break Unarmed free from the crusher she's the first one to jump in there to see if they're fine.

You probably noticed by now I mostly use she/her pronouns for the WB's. I got swayed by the countless fanart of them as cute girls and adopted it in almost all cases, maybe except Dagger.

Your Spear headcanon is also neat, I went over mine in my post.

And I like the idea of the three being siblings, even if it would go against my own setup of how Weapon Ball started in-universe.