Shilbagon's holster was modified from Silizan's holster, but the two monsters are not related in the plot.

Living in the Demonic Realm near the Lion's Nose Sea of ??Trees in Japan, they are of the same race as the Goldras that appeared later. They have shorter protruding horns on their foreheads and a pair of horns on the back of their heads. They are all silver. There are purple stripes all over, the eyes have no pupils, and the back is covered with spikes. It has a strong body and extremely strong brute force. It attacks with its head horns, tail and brute force. The only drawback is that it has poor eyesight and can only see moving objects. Shirbagun's leather holster may have a certain protective effect on the holstered actor (who appears to be fatter). He appeared as the "King of Shilbagon" who was thought to have been strengthened from Shilbagon by the hands of the Super Hippolyte. When he first appeared, he wreaked havoc with King Goldras and brought destruction to the streets of Yokohama City. It causes devastating disasters. Its strong skin makes it difficult for enemies to attack. It has a strange power of 4.7 million horsepower. Its skill is to emit cyan light bombs (explosion and flame) from its mouth. It also overcomes the shortcomings of its eyes. Shirbagon has no pupils, and combined with his roar, it makes people feel that he has a very bad temper and is very vicious.