Kintaro

Former gatekeeper of the Junior Duelist Center. He was fired by Hakuoh after losing to Shobu (Who he had quickly befriended.) Nobody knows how old he is, and he often carries around a man-purse and an abacus.

Trivia
In the english version of the first anime several jokes are made calling Kintaro a squirrel ("I AM NOT A SQUIRREL!" being a fruquent quote of his) due to his short stature.