Hässlich (HESS-lish) are troll-like Wesen who are particularly fond of stewarding bridges, demanding toll payments from the Eisbiber who build them. Several of them work in construction for that very purpose. This is done as a means of extortion as well as for the sake of upholding ancient traditions. When the Eisbiber do not comply with demands, the result is fatal. Hässlich in German means ugly, so they are called "the ugly ones."