Inventor Grotch (発明家グラッチ, Hatsumeika Guratchi): Universal Reckless Driving Tribe Bowzock inventor. He is responsible for many of the weapons used by the Bowzock such as the Fattening Spray and Forgetfulness Water-Gun, as well as for picking the imo-youkan, used to make the Bowzock grow. Though generally with a loyalty to Gynamo, he did briefly turn against him alongside Zemolda due to the bribery of temporary leader RitchiRitchihiker, upon which he did research on RV Robo and sabotaged it after it's capture.
He was the one who discovered the imo-youkan by accident when making an investigation of Earth food alongside Ichitarou Tenma, the son of the owner of Pegasus Garage, and easily handled the Carranger by himself with little problem. Fortunately, the imo-youkan he ate had expired and wore off before either he or the Carrangers could do harm to each other.