Special Investigation Robo Janperson was the 1993 installment in Toei Company’s Metal Hero Series. The series revolved around Janperson, a robotic detective who patrolled the streets of Tokyo and fought against three different underworld organizations who used super technology to subjugate the masses. Unlike most Metal Heroes, a monster-of-the-week was rarely shown and most of the villains are criminals akin to television police dramas. The name given to this series by Toei for international distribution is Jumperson.