|Race & Species||Human|
|Debut||Chapter 179 (Partially)
Chapter 182 (Fully)
Oyama has medium-length black hair and nice, light-colored clothing.
Oyama is not as willing as his teammates to accept truces and is the most fiery of the three. He also seems to be rather self-conscious regarding his Borrowed Power, Baedal Choi, as shown by his confrontation of Han Dae-Wi after using his Borrowed Power.
Sugihara is a strong participant of God of High School Consolation Match. Baedal Choi must have acknowledged his power since he agreed to make a contract with Oyama.
Oyama utilizes a contract with Baedal Choi , the man Dae-Wi hoped to make a contract with when he first learned about Borrowed Powers.
Oyama is a very strong user of Full Contact Karate, rivaling even Dae-Wi at the time of the Consolation Match. He is well versed in full contact karate, noting the similarities between kata and Dance of Four Gods.
- Breaking Hundred Bricks: A simple tameshiwari (art of breaking with empty hand) with a enough strength to break hundred bricks
- Cutting Bull's horn: A diagonal punch aimed at one's head. the name implied that it can be used to cut bull's horn.
- Death Blow: a technique performed by Sugihara with help from his charyeok: Masutatsu Aoyama. As the name implied it was a one hit K.O./ Kill.