Boy/Harry Boy: Jiban's robotic assistant. He stays at his secret base. Originally he was simply Boy, an immobile camera-like robot who had to give instructions to Mayumi to operate the control center, but then his computer was transferred to panda-like "Harry" (a robot devised by another student of Doctor Igarashi's) and began substituting for the amnesiac Mayumi. He died when Jiban's base was destroyed.