|This article is about a/an kaijin in Kamen Rider Black.|
Scarab Beetle Mutant was used by Bilgenia to awaken the ugliness rooted in humans. The appearance of Oganemushis had started a hunt for those that are after them including the parent of a boy named Saturo, resulting in the people obtaining them for riches. Bilgenia disguised himself as a recent-millionaire and lured Kohtaro into battle. In the second battle at a train yard, Kamen Rider Black was hit by the gold dust that was slowly hardening up. Road Sector tackled Bilgenia and Scarab Beetle was hit by the Road Sector's Sparkling Attack causing the gold to come off. Once Kamen Rider Black killed Scarab Beetle Mutant with the Rider Punch, the Oogani Beetles disappeared.
It can emit Oganemushis (which are worth $10,000) from the mouth-like opening on its chest and emit golden dust from its mouth.