 He initially thinks Harima is homosexual when the latter accidentally sent him a love letter and asked him out on a date, Tenma being the intended party both times.He is named after a Japanese actor best known for being a mainstay of the Japanese Game show Takeshi's Castle and the 1987 Sentai Series Hikari Sentai Maskman

The physical education teacher, often referred by the class of 2-C as due to his gorilla-like physique.His methods are very strict, and he makes it known to every student of Yagami High School (usually Class 2-C) how he thinks a responsible student should behave.