Anubis

Anubis (アヌビス) is a fictional character in the Shaman King series. He is one of the Four Kings of Hell, and the guardian of the Spirit of Rain.

About
Patch Tribe originally managed Five Grand Elemental Spirits in a holy commune where spirits of the tribe would go after they die. However, the elemental spirits were too powerful to be controlled by human class spirits, and after the incident of Hao, Patch Tribe decided to entrust the elemental spirits to gods who rule respective hells. However, some gods such as Satan and Lucifer were considered to be inappropriate because they are "too famous" and "too powerful to be controlled by agreements", therefore Enma Daioh and Anubis and Izanami and Mephistopheles were chosen because of their personalities to respect agreements, and are "less known" and "less noticeable".

When Saigan Sati and Team "Myooh" invaded Hell to steal the four remaining Great Elemental Spirits, Yainage faced off against Anubis in order to retrieve the Spirit of Rain.

Anime/Manga Difference
Anubis does not truly appear in the manga and both anime series.

Trivia

 * In Ancient Egyptian mythology, Anubis was the god of death and the underworld before it was changed to Osiris and Anubis became his subordinate.