銀アト子
Personification of the Cthulhu Mythos deity Atlach-Nacha, as seen in the [[Haiyore! Nyaruko-san]] series. Does not appear in the TV anime, but does appear in the Flash animations ([i]Haiyore! NyaruAni[/i]).

In accordance with the spider deity she represents, Atoko's character design incorporates spider-like elements, e.g. a [[spider web]]-patterned [[kimono]].
shirogane atoko