Unshō Onizuka

Appearance
Onizuka is a tall and muscular man. He like all other members of Teimo is bald and has thick eyebrows and a large beard. His height and body size easily towers all the members of the Teimo's Shadow group. He is seen wearing a open jacket and a necklace made of large beads.

Saint Ishiyama Academy Arc
He was brought by Kiriya along with other members of Teimo in order to fight Oga. He was initially able to push Oga back, but was soon defeated by Oga. He along with other members of Shadow group came to Shingetsu style Dojo to train. On meeting Oga there, they all attacked him but were instantly defeated.

Prince En Arc
They all went to the Mapputatsu mountains to train further and learnt some fighting skills from Ittosai Kunieda.

Mobichi Arc
Onizuka and the other members of the Shadow Force appear by the river near Ishiyama High School, where they find Oga looking beaten and exhausted; seeing him, they decide to fight and get their revenge for earlier. Onizuka also mentions that Oga should still be able to remember who they are. However, the four suddenly find themselves surrounded by the Tōhōshinki and their gangs; altogether, they confront the Shadow Force. The presence of the number of delinquents weakens and frightens Onizuka, who is subsequently beaten up together with his own group.

Powers & Abilities
As a part of Teimo's Shadow group, he is said to have some fighting ability. He mostly relies on his physical strength and brute force, but is easily stopped and defeated by Oga. He is later seen training training along with Kunieda's grandfather where he managed to master the Nadeshiko, but only to an extent of breaking medium sized rocks.

Death trailer: A technique of Onizuka in which he tackles his enemy with great force.