Kikkaijin Mecha-Gorilla

Kikkaijin Mecha-Gorilla (奇械人メカゴリラ Kikkaijin Meka Gorira?, 14, 17, 39): A gorilla monster. He was reconstructed from a giant oaf criminal convict initially incapable of speech. He gains a habit of pounding his chest. His mission is to capture a scientist who would be forced to work with Black Satan and later tries to prevent Titan's first funeral ceremony from being uninterrupted. He can trade both of his hands into a hammer and chain extendable claw respectively. The hammer can cause earthquake tremors. The disadvantage with the chain claw attack is that Mecha Gorilla remains immobile until he retracts it. Destroyed by Stronger's Stronger Electro Kick.

Ghost Story, The Demonic Easter
Kikkaijin Mecha-Gorilla revived with other Kikkaijin to help Bat Kikkaijin, but apparently they defeated by Stronger again.

Goodbye! The Glorious Seven Riders!
Later returned as part of the Revived Kaijin Corps. These revived kaijin were destroyed by the 6 Riders.

All Together! Seven Kamen Riders!!
Shortly after, he was once again revived as part of a new Revived Kaijin Corps. They were all destroyed by the 7 Riders.