Herman

Herman Grimm is an important scholar in Lust Grimm and the son and nephew of the famous Brothers Grimm.

Lust Grimm
Herman meets Magrut when the latter is looking comes to Back Cover looking for a key (specifically, the key to a locked door in the Waterway . He explains the nature of the world to Magrut, asks him to find the final missing page (since, like the succubi, he can't see the pages) and gives him the key.

Herman later takes part in the defense of Back Cover against an invasion of succubi led by Manuve. He devotes himself to a magic ritual that weakens the succubi, but he is running out of power and asks Magrut to defeat Manuve. After Magrut does so, Herman sacrifices himself to defeat the other succubi.