Grimm Grimoire Hamlin

Background
A community that once served a Demon Lord from the community, Grim Grimoire who are believed to have died after being defeated by another community.

Location
Have no location for it was newly formed then destroyed before it settled on land.

Appearance
They attacked the Salamandra community in volume 2 of the light novel and episode 7 of the anime.

Members
Because the Piper of Hamelin was newly formed they only had 3 members and a doll:
 * Black Percher(leader)
 * Ratten
 * Weser
 * Strom(doll)

Achievements/Goal
Wanted to expand the community - Failed

Trivia

 * the community is based on the fairy tale the Pied Piper of Hamelin
 * all the community members are demons based on theories of how the children in the fairy tale died:
 * Black death(Black Percher)
 * the pied piper(Ratten)
 * landslides(Weser)
 * Storms(Strom)
 * Unlike written/explained in the novel, the correct term for "storm" in German is "Sturm". "Strom" means either electricity, current (both electrical and water), stream or torrent. This mistranslation might have been a mistake by the author or the translator.