The lemure is technically a more powerful version of the manes, but is just as slow and has only one attack, so it should be no hassle at all to any player that encounters it in Gehennom.
Lemures are shades or spirits of the restless or malignant dead in Roman mythology, said to represent those not afforded proper burial, funeral rites or affectionate cult by the living.
The Larvae (Lemures) are Roman spirits of deceased family
members. These malignant spirits dwell throughout the house
and frighten the inhabitants. People tried to reconcile or
avert the Larvae with strange ceremonies which took place on
May 9, 11, and 13; this was called the "Feast of the Lemures".
The master of the house usually performed these ceremonies,
either by offering black beans to the spirits or chasing them
away by making a lot of noise. Their counterparts are the
Lares, friendly and beneficent house spirits.