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.

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.