The Underground Hades Empire Infershia are an underworld empire located in the Kedomono Realm at the center of the Earth. They are led by the mysterious N Ma.

15 years ago, the Infershia army attempt conquer Earth through N Ma's Hades Gate. However, they were stopped by Heavenly Saint Blagel, who sacrificed himself to seal them.

N Ma and his followers would later make many attempts the seal so they could conquer Earth.

After N Ma was destroyed, Hades Goddess Sphinx assumed leadership of Infershia, entering an alliance with Magitopia to help rebuild their world.