One of Yankumi's students. He is best friends with Sawada.
Teruo "Kuma" Kumai was created by mangaka Kozueko Morimoto. In the anime, he is voiced by Hiromi Sugino in the original Japanese, Ted Lewis (under the alias Ed Paul) in the English dub, Yong-Wu Sin in the Korean dub and Eric Chevallier in the French dub. He is portrayed by Tomohiro Waki in the live action drama.