Straw Banki (ストローバンキ Sutorō Banki) is a drinking straw (ストロー sutorō) Savage Water Barbaric Machine Beast (害水蛮機獣 Gaisui Bankijū) who ends his sentences with "buku". Other than using his Straw Scatter Shot to have people breathe out poison gases, he drinks from four bottles to gain a special ability. Explosive Drink (yellow) lets him to shoot bubbles that explode on impact. Smokescreen Drink (purple) releases a smoke screen, and his Capsule Drink (blue) creates a bubble prison. Kegalesia created the special Gai Aqua (red) to increase his evil. He looses it and it effects Sosuke and Renn but Kegalesia creates a supply of it for him. Straw Banki is defeated by Sosuke and Speedor inside of Go-Roader before growing huge and scrapped by Bearrv, Bus-on, Seiku-Oh, and GunBir-Oh.