"The Crawling Chaos"
A character of the series Haiyore! Nyaruko-san and the main heroine. She's a Nyarlathotepian, an alien from the planet Nyarlathotep, and is tasked to protect Yasaka Mahiro from harm by other alien races. She loves Mahiro to the core, and often tries to convey it in different ways, though most are unsuccessful (due to Mahiro dismissing her advances). She's a big otaku, shown to have been buying large amounts of "Earthly entertainment". She takes the form of a girl with green eyes, long silver hair, and a long ahoge.
She is often depicted carrying a crowbar.