EPISODE ONE Shoukyaku Banki Height: 218 cm to 54.5 m Weight: 245 kg to 12.5 t He is a Savage Sky Barbaric Machine Beast under Kitaneidas. He inserted various things such as cameras and bags into the furnace on his forehead to produce smog and perform his attacks. Shoukyaku Banki prefers to burn flowers and anything pretty to improve the toxicity of his smog. He fails in his mission when the Go-ongers arrive. Back at the base, he seduced and tricked by Kegalesia and forcefully stuffed into a device that upgraded him. Engine-Oh killed him.

EPISODE TWO Pipe Banki Height: 220 cm to 55 m Weight: 247 kg to 617.5 t Savage Water Barbaric Machine Beast sent by Kegalesia. He is sent to pollute a dam, but is defeated by the Go-ongers. He then returns later to pollute the river in giant form, attacking the Go-ongers when he learned they didn't have their Engine Casts. They tried using their Highway Buster on him but it was no use. The three got their casts back and challenged Pipe Banki with EngineOh. He breaks a bridge where there is ongoing traffic, so EngineOh bridged the gape and the cars went over the robot. Unfortunately Pipe Banki didn't make it easy and knocked EngineOh off and caused one car to almost tetter off. Go-On Black and Go-On Green luckily saved the occupents of the car and Engine-Oh was able to destroy Pipe Banki, causing bubbles to emerge. Kegalesia was rather livid over his defeat.

EPISODE THREE Scoop Banki Height: 222 cm to 55.5 m Weight: 225 kg to 562.5 t Yogostien sent this Savage Land Barbaric Machine Beast to attack Neo Tokio Hills. He often said "Kappore" in his sentences. His main attacks were "Landslide Blizzard" and the stronger "Super Landslide Blizzard", using his shovel gauntlets to scoop up boulders or bury his oppoents in dirt. He was killed by Engine Oh.

EPISODE FOUR Spray Banki Height: 192 cm to 48 m Weight: 216 kg to 540 t A clumsy Savage Water Barbaric Machine Beast sent by Kegalesia to steal the Engine Cast of Birca. He can shoot acid from his mouth, which he does after counting to three. Kegalesia called spray Banki her own child. Kegalesia first showed herself to the others along with her beast. He was wounded by Birca and Gunpherd before Engine Oh destroyed him.

EPISODE FIVE Jishaku Banki Height: 214 cm Weight: 240 kg Denjishaku Banki Height: 234 cm to 58.5 m Denjishaku Banki Weight: 263 kg to 657.5 tons A Savage Land Barbaric Machine Beast sent by Yogostien who uses his magnetism, able to take and use his opponents' weapons. He becomes Denjishaku Banki, an electromagnet, via an electric current through an inductor. He is the first opponent of Engine Oh Birca.

EPISODE SIX Speaker Banki Height: 219 cm to 54.8 m Weight: 248 kg to 620 tons A Speaker Savage Sky Barbaric Machine Beast sent by Kitaneidas, able to convert beautiful soundwaves into noise pollution with his mircophone spear. He can shoot out the resulting soundwaves from his speakers. The Go-Ongers use ear plugs to avoid his attacks. Speaker Banki was later upgraded to generate louder soundwaves to withstand the earplugs. Saki is told by her boyfriend that Speaker Banki's weakeness is the speakers on his feet, that don't sound. Engine-O Gunpherd destroyed both Speaker Banki and his sound barrier.

EPISODE SEVEN Bombe Banki Height: 209 cm to 52.2 m Weight: 235 kg to 587.5 tons A gas cylinder Savage Water Barbaric Machine Beast sent by Kegalesia, who fed lies for him to tell the Go-Onger. He could make any metal rust, including the main three Engines. Carry Gator was chasing after him and he made the Go-Onger believe he was an enemy. Bombe Banki was destroyed by the newly formed GunBirOh. Speedor, Bus-On, and BearRV remain rusted after he is gone.

EPISODE EIGHT Boring Banki Height: 221 cm to 55.8 m Weight: 249 kg to 622.5 tons A Savage Land Barbaric Machine Beast sent by Yogostein, it is based on a machine called a boring that was made to achieve greater accuracy to cut a tapered hole in items like rocks by obtaining the of the diameter of the hole. The Go-onger couldn't take him on because the first three Engines were rusted and CarryGator was still charging. He seemingly went to sleep, but in reality was digging all the way to collect magma to overflow the Earth with lava. It tackled GunBirO and spit lava on it. It was finally destroyed by the combined efforts of EngineOh and GunBirO.

EPISODE NINE Lens Banki Height: 216 cm to 54 m Weight: 243 kg to 607.5 tons Kitaneidas sent this Lens Savage Sky Barbaric Machine Beast to use his power to teleport people into a Frame Dimension called Junk World. In the Junk World, they could mechanize humans to become new Ugats, because they were running out of spare parts to make Ugats. Though scrapped by EngineOh and GunBir-O, Lens Banki's pictures of their final attacks were used as information for Kagami Banki to use.

EPISODE TEN Kagami Banki Height: 215 cm to 53.8 m to 59 m Weight: 242 kg to 605 tons to 665.5 tons A mirror Barbaric Machine Beast created by all three Pollution Ministers. He tended to say "Mirror" in his sentences. Because of the pictures Lens Banki took before being destroyed, Kagami Banki can use the mirror on his chest to duplicate the Engines' attacks with his 'Mirror Effect.' Being recharged with Bikkurium took longer in his case because he was made by the three ministers. Kagami Banki reveals his true Form, possessing the powers of all three Pollution Ministers, using it in his "Mirror Bomb" attack. He was killed by EngineOh G6. he was primarily giant.