Supreme Grade Blades are the most powerful weapons in One Piece, so where exactly do Black Blades fit into this trend or ...

Mihawk uses one of the 12 Supreme Grade Blades, Yoru. Mihawk is also one of the two characters we've seen that have turned their sword into a Black Blade, permanently changing its attributes.

The Elbaf arc hints at the existence of multiple Supreme Grade Weapons, with Ragnir, Cerberus, and the Giant Sword being key contenders ... and though 12 of them exist, currently, only 5 have ...