|This article is about a/an monster in Engine Sentai Go-Onger.|
- ""What a splended kettei!Bang gang bang kettei ban!""
- ―Kettei Banki's final words before his destruction.[src]
Kettei Banki (ケッテイバンキ Kettei Banki): A Barbaric Machine Beast sent by Kegalesia and Kitaneidas. It was modeled after all of the Barbaric Machine Beasts that came before him, therefore able to use all their attacks. ' He is scrapped by the combined finishing attacks of Engine-Oh, Kyoretsu-Oh, and Seiku-Oh.
This is the final monster to appear in Go-Onger.
- Blade Sword (Finisher: Blade Slash)
- Mega Blaster (Finisher: Blue Buster)
- Fury Chainsaw (Finisher: Saw Slicer)
- Zoom Laser (Finisher: GP Luster)
- Cut Axe (Finisher: Cutting Slashes)
- Fire Gun (Finisher: Gun Lock-On Fire)
- Sword Blaster (Finisher: Slashing Blast)
- Chainsaw Axe (Finisher: Slice Cutter)
- Laser Gun (Finisher: Lock-On Laser Fire)
- Oil Banki's Flamethrower Tool
- Speaker Banki's Destructive Sound Waves
- Bouseki Banki's Shuuurrria
- Hikigane Banki's Bullets
- Hammer Banki's Destruction
- Heater Banki's Fiery wind beam
- Chainsaw Banki's Cut
- Pipe Banki's Sticky Coal Tar
- Spray Banki's 1, 2, 3 push
- Hatsuden Banki's Lightning attack
- All out attack (Finisher)
- Rolf (Finisher: Slash Striker)
- Renten (Finisher: Nirvash Vanish)
- Eureka (Finisher: Nirvash Vanish)
- Haji (Finisher: GP Finish Slash)
- Saya (Finisher: Chiropteran Slash)
- Horonderthal (Finisher: Dinosaur Explosion)
- Animal Path (Finisher: Beasts Blast)
- Yoshjiro (Finisher: Saber Finish)
- Mirin (Finisher: Dual Blaster)
- Reika (Finisher: GP Finishing Attack)H
- Akina (Finisher: Blade Buster)
Notes and Trivia
- Kettei means 'definitive' in Japanese.
- Kettei Banki's unique motif is monster.
- Kettei Banki's design is somewhat resembles to Long Banki, albeit with one dragon head.