Izanami

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

About
Izanami is one of the Four Kings of Hell, likely the Asian facton along with Enma.

Invading Hell
When Lady Sati and Team "Myooh" invaded Hell to steal the four remaining Great Elemenental Spirits, Jackson faced off with Izanami in order to obtain the Spirit of Thunder.

Anime/Manga Difference
Because the anime and manga endings were significantly different, Izanami never appears in the anime.

Trivia
It and Enma are the only two of the Four Kings that are based in Japanese mythology, as well as the only two found in one area in the world rather than representing a large faction of it.

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

It is likely that Izanami is female like her real life counterpart, thus the only queen amongst the four.