Braum, Fishy Stuff...
So if Braum's shield is a door, it makes it a door and a shield. Now sound it out, Door-and-shield. Doran's shield! So we can safely assume that Braum is a relative of Doran, probably the manly father, and that's a piece of his shield, the door and shield. This means that he had a two sons, and probably a daughter. One of them playes Beyblade(tm) all the time so Braum made him the Doran's Blade, a beyblade made of a door, duh. And the other son got a ring because fuck it, here's a ring. But these two sons weren't brothers, they were cousins. And they had a long lost brother they didn't know about named Jacob, but Braum was also like, fuck Jacob. Mustachio.