The third of the Four Temple Guardians. In the English dub, he is Mimi's "twin brother" where he had different plastic surgeries to look older where he claims that he is one minute older than Mimi.

Gyuujirou is often seen piloting a robot suit and first appears where he destroys Mimi's access card upon her defeat and wrecks her deck. He often cheats and relies on deceit in his duels. His constant defeat at the hands of the series' heroes has led him to hate both Shobu and Hakuoh.

The 1st Duel Masters series.<br>
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A mysterious organization is interested in fledging duellist Shobu Kirifuda's ability to bring Duel Master creatures to life. With the support of his friends, Shobu duels with passion, discipline, and heart as he strives to be like his father and become the next Kaijudo master.
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(Source: Anime News Network)

Gyuujirou Japan