Jinpei Jinpei also known as Jinpei the Swallow is the Science Ninja Teams youngest member and the reconnaissance expert. He is the 'adopted' brother of Jun. Weapons and Arsenal Rebound Ball: Jinpei's primary weapon in Gatchaman II. A super-ball projectile that is thrown from a shovel-like mitt attacthed to his hand. Rebound Ball G-4 Retrieved from "https://gatchaman.fandom.com/wiki/Jinpei?oldid=4213" Categories: Characters Gatchaman Community content is available under CC-BY-SA unless otherwise noted.