Onimaru

Onimaru was a bully in Shiro Kabuto's school, with his usual victim being Mitsuo.

Appearance
Onimaru is of the later elementary school age with a large yet muscular frame. He has messy black hair, black eyes, and thick eyebrows. He dresses in a purple t-shirt, shorts, and shoes.

Personality
Onimaru is a typical bully, picking on someone of weaker frame. However as revealed in Stronger T4's cockpit, he is actually rather insecure and cowardly. After Mitsuo showed courage, Onimaru started to become friendlier and respect Mitsuo.

History
Onimaru picked on Mitsuo at a certain time after Mitsuo had transferred to his school and only continued. When Mitsuo finally had enough, he tricked Onimaru into getting into the cockpit of Stronger T4 with him to show his own strength. Onimaru was terrified that they were inside a robot and what Mitsuo was doing, which caused Mitsuo to stop. Baron Ashura in control of Stronger the whole time had it battle Mazinger Z. By the time Koji went to rescue the boys, Onimaru was too scared to move until Mitsuo showed his courage by jumping out of the cockpit and into the Hover Pilder. Seeing someone he thought was weak go so far, Onimaru jumped out to follow. Afterwards they made peace.