Gyaron's skin is leathery and black. He has 3 pointy fingers on each hand. His legs have raised silver markings that resemble bones. He also has a very large silver head with a snake-like mouth. His eyes are the same silvery color as his head.
Gyaron fought Junichiro Iwaki but was ultimately defeated.
Gyaron was the fifteenth monster to fight Greenman.
Gyaron can conduct electricity from his head that he can use against his enemies.