Tengen Uzui is said to be a great fighter when he was in highschool, giving him the name "Gangsta Sensei". He has 3 wives, Hinatsuru, Makio, and Suma who are know as "The Charming Kunoichi of the store and canteen", Which is located in the highschool department. Although Tengen acts tough, he's a very kind person in nature. When brings gunpowder and explosives to school for his "flamboyant art" that makes Principle Amane mad, though he says he'll pay for the destruction with his paycheck.