Though canonically never given a name, Raizou Mototani is an Obelisk Blue student who is commonly referred in the GX fandom as Bubba. In the Yu-Gi-Oh! GX Spirit Caller video game, he was dubbed as "Raizou Mototani". Likewise, in the Yu-Gi-Oh! GX Duel Academy video game, he was dubbed as "Conklin".
He was also a friend of Chazz Princeton before Chazz left Duel Academy. He is seen next to Chazz while Jaden Yuki dueled Dr. Crowler. When Chazz goes to the Obelisk Blue dorm when in the Society of Light, Raizou was one of the first to be defeated and join the Society. He is always seen with Taiyou Torimaki.
In Yu-Gi-Oh! GX Spirit Caller, Raizou plays a Rock Deck called Giant Enshrinement.