The Black's Scale is a key item in Suikoden II.
After his dragon Black death, Futch kept one of his scale as a memento. Later, Futch handed it over temporarily to Kent. Although the scale at first doesn't seemed to hold any magical purpose, and was only for sentimental attachment, when Kent prayed to it, the mist at Mt. Rakutei was lifted for a brief moment, and allowed Kent to reach the top of the mountain. After the events at Mt Rakukei, Futch told Kent to keep the scale forever, as proof of Futch's promise to become a Dragon Knight again.