This article is about a/an kaijin in Kamen Rider Stronger.

Stag Kikkaijin (クワガタ奇械人 Kuwagata Kikkaijin, 15 & 24): A stag beetle monster. His mission is to kidnap a scientist designing on an anti-gravity machine. Shadow later decides to cancel the project, using the man just as a lure to blow up Stronger in a self-destructing outpost. The monster can turn itself into a blue mist to travel through doors. He can fire an array of wire claw appendages to attack and both of his arms are giant claws. He was destroyed by Stronger's Stronger Electro Kick. Shadow's Trump That Calls Death!!

The Stag Kikkaijin was one of four dark cloak-wearing Kikkaijin that tormented a group of civilians in a nightmare induced on them by Kikkaijin Hasamigani while they were traveling on a locomotive. Bizarre! The Unmanned Train Runs!!

The Stag Kikkaijin's remains were later seen as part of a heap of scrapped Kikkaijin in a Black Satan base discovered by Stronger, Tackle and Tobei. Seen!! The Great Leader's True Identity!!