|This article is about a/an kaijin in Kamen Rider Black RX.|
- "I am Demon Robot Gun Gadain. Minami Kotaro. I am here to destroy you and Rideron."
- ―Gungadin's first words[src]
A large robot with tank treads instead of legs sent to kill RX before he completed Rideron, Gungadin attacked with his body guns. Unable to defeat Gungadin on his own, RX tricks Gungadin into thinking he destroyed Rideron while the real car gains life. Offered the title of knight if he killed RX, Gungadin went on a killing spree to force the Rider out into the open. With the aid of Rideron, RX managed to defeat the Demon Robot with his Revolcane stabbing him into his head module.