Inokabuton - A wild boar/Japanese rhinoceros beetle monster who has ability spraying gas which cause any human follow his order. His human form is a prisoner who taken from prison by Gel-Shocker soldiers, after General Black tell him about the Gel-Shocker's goal, he order Gel-Shocker Scientist turning him into Gel-Shocker Kaijin with power combination between Wild Boar and Rhinoceros Beetle even he refuse helping Gel-Shocker. During his first fight against Kamen Rider 1, he overpower him and mortally injured Kamen Rider 1 leg with his sharp beetle horn. Later he fight against Kamen Rider 1 overpower him again until Tachibana Tobei comes pretending still under his control using Gel-Shocker Combatmen's sword attacking Kamen Rider 1 while he actually aim at him cutting his horn. Kamen Rider able outmatched him and he transform himself into Inokabuton Wheel at his final battle against Kamen Rider 1. Destroyed by Kamen Rider 1's Cyclone Attack.