|This article is about a/an kaijin in Kamen Rider Black.|
Jewel Beetle Mutant was used by Gorgom to take over Battle Hopper. Jewel Beetle Mutant lured out Kohtaro by holding a child over the side of a building so that Battle Hopper would attack Kamen Rider Black. This monster sent more of its insects which Kohtaro spotted later that night and tried to fight them off which failed when two of the insects infected Battle Hopper. While Kohtaro pursued it on Road Sector, Bilgenia hopped onto the Battle Hopper until it threw him off and High Priestess Bishium explained that Battle Hopper takes orders from no one now and Battle Hopper rampaged the streets. Kohtaro headed over to Iwagami Pass where he battled Jewel Beetle Mutant in order to get Battle Hopper back and prevent a missile from blowing up Mammoth Dam. He cut off Jewel Beetle's wings. Kamen Rider Black killed him with the Rider Kick, disarmed the missile, and battled Battle Hopper with Road Sector to get the insects out of it.
It can fly, shoot beams out of its eyes and emit insects which can take over a person's nervous system out of its mouth.