Scan the QR Code on said cards in Piggleston Bank to obtain a Local Coin - Hokkaido.
Use the coin in the Crank-a-kai to free Grumpus Khan.
His random nicknames are:" Gruff, Baaahey, NoKhanDo,and Zachary.
"Jingisugisukan" is a combination of gisugisu ("awkward, tense") and Jingisukan, a dish consisting of mutton meat grilled on a dome-shaped skillet. The name is a corruption of "Genghis Khan", as it was once believed mutton was the favourite food of Mongolian soldiers and that they cooked it on their own helmets, thus the shape of the skillet.