Izanami

Izanami (イザナミ) is a fictional character in the Shaman King series. She is one of the Four Kings of Hell, and the guardian of the Spirit of Thunder.

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".

Izanami is one of the Four Kings of Hell. When Saigan Sati and Team "Myooh" invaded Hell to obtain the four remaining Great Elemental Spirits, Jackson faced off against Izanami in order to retrieve the Spirit of Thunder.

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

Trivia

 * Izanami is the goddess of creation and death in Japanese Shinto myths.