Naayééü Neizghánà() is a mythical hero from Navajo mythology who, along with his brother TóbájÃÂzhchÃÂnÃÂ, rid the world of the Naayééü. He is considered by some to be the Navajo god of war, although evidence for this is limited.
Naayééü Neizghánàis a Navajo word that can be translated to "Monster Slayer" or "Killer of Enemies". The name is a relative clause that may be analyzed as naa-yééü "enemy-dangerous" + neizghán "[he] kills several [of them]" + -à"person who..." It is cognate to the Chiricahua Apache name Naaghéé'neesghánÃ©à  for the analogous figure in Apache myth, who is often cowardly rather than heroic as for the Navajo.
Changing Woman (sometimes The White-Painted Woman or The White Shell Woman) became pregnant with her children after basking in the Sun God's rays while bathing in a pool of water. The giant Yéüiitsoh heard when the children were born and set out to kill and devour them. Changing Woman hid her sons and tried to convince Yéüiitsoh that it was mistaken. When questioned about the small footprints in the snow, Changing Woman replied saying that in her loneliness she made the footprints herself to pretend she has company.
After both brothers had matured they set out to destroy the Naayééü, who were abominations born from "unnatural means" (specifically women having intercourse with objects instead of men). One of the earliest creatures they encountered was the Spider Woman (or the Spider Grandmother) who gave them each a feather that would defend them on their journey, which they used to protect themselves against multiple monsters (including giant birds, bears, and serpents).
At one point, the brothers decided to visit their father, JóhonaaüéÃÂ, the sun. The trials they have to go through are different depending on the version of the story, but most involve figuring out clever ways to climb up into the sky and get past the guards of the sun's house. Once they have proved themselves to their father, he gifts them weapons to help them kill the rest of the Naayééü, chief among them being a quiver full of lightning bolts.
Yéüiitsoh is described as the largest and most powerful of the Naayééü, usually the last to be killed by Naayééü NeizghánÃÂ. Whichever method is used to kill the giant, it almost always involves taunting it from a hiding place and striking a fatal blow with a lightning bolt.
Naayééü Neizghánàand his brother âÂÂborn of waterâ along with the Aztec twins are mentioned in, and the Navajo twins, a recurring theme, in Roger Zelazny's book, Eye of Cat. The bookâÂÂs hero can be regarded as a âÂÂpairâ of twins, a single being who is both âÂÂneolithicâ and a collector of âÂÂmonstersâ for EarthâÂÂs zoo from many planets, who is forced to slay the greatest monster (either the âÂÂCatâ of the title or the heroâÂÂs other self, in an act of becoming one), or simply Billy, the civilized twin of âÂÂCatâ the evil twin, or Cat the ultimate monster also the heroâÂÂs âÂÂchindiâ (ZelaznyâÂÂs spelling of a Diné (the People according to mystery writer Anne HillermanâÂÂs Anglo spelling and definition) or NavajoâÂÂs name for themselves, a much more complex work, ZelaznyâÂÂs last, and possibly greatest literary achievement.
In the Buffy the Vampire Slayer universe, Naayééü Neizghánàappears as one of the slayers before Buffy.
Naayééü Neizghánàhas briefly been mentioned in both Thor and Wonder Woman comics as a part of the Navajo pantheon.
In the book Race to the Sun, Nizhoni and Mac Begay are revealed to be descendants of Naayééü NeizghánÃÂ.