Lyman Banner, known as Daitokuji (大徳寺先生, Daitokuji) is a character in the Yu-Gi-Oh! GX Duel Academy video game. This is a video game depiction of Lyman Banner, a character from the Yu-Gi-Oh! GX anime.
Banner runs a Deck focused on Fusion Summoning. This keeps in his theme of alchemy, as he says each time he Fusion Summons, "Alchemy teaches to combine elements into new and richer creations." (2 cards in Fusion Deck unconfirmed.)