|Debut (Manga)||Koukou Tekkenden Tough Chapter 155:|
Oguma is a sempai at Dogen Arikawa Tetsushinkan dojo who has a habit of crippling any challenger to the dojo. He was defeated by Galhad Suanpahkti, when Dogen and Kichi found him all he could say was cobra.
Oguma was personally trained by Dogen Arikawa. Because of the popularity of Vale Tudo, a lot of people think that ground techniques are worth more than the standing techniques. Dogen did not agree with this mentality however, he formed Oguma strictly with the goal of sending him to the Vale Tudo tournament to fight against ground specialist