Dobin Sensei

Dobin Sensei was first introduced in the Duel Masters Versus season of the Duel Masters Anime.

Plot
He was Katta Kirifuda,Lulu Takigawa and Bucyake's school teacher. He was aware that Katta was desperately trying to familiarize himself to the Dragon Saga and Dragsolution.He gave Katta intense training to make him stronger and to improve his dueling skills and strategy. He dueled Katta after their training. Katta managed to use the things he had learned from him and deduced that his last shield is a shield trigger,Take-jin, Dragon King Keep after checking his deck by Spear Lupia's effect. He lost to Katta in a duel and gave him Gaial, Leader Dragon Sword/Gaiburn, Furious Leader Dragon as a reward for training.

During the time frame of the card shops tournament under the Duel Masters National Tournament,he gave Katta one-to-one lessons. When Lulu and Bucyake asked if he was done yet,he was then aware of what Katta was planning to do next.He then dueled Katta and won in one of the card shop tournament.

He appears again when Katta and Hamukatsu were transported to a town.When Katta realized that this town was the location if his next challenge,he replied to Katta that his next opponent was stronger and more terrifying than him,which was Katta's own mother Mai Kirifuda. He gave Katta Gigaheart, Invincible King Sword/Ohginga, Strongest Passion after Katta's win against his own mother,with Mai convincing Katta to take it. When Katta and Lulu got transported to Shobu Kirifuda's location,he said to Mai that the final challenge will reflect Katta's family love and support towards Katta in his journey to the nationals.

Deck
He uses a Fire Civilization deck based on Gaial Command Dragon and Human Baku.