Nupperibo

Nupperibos were a type of devil. To be precise, they were the literal bottom of the infernal hierarchy.

Description
They were strange, bloated creatures whose eyes were sewn shut as were their mouths. Every nupperibo was deaf. However, it could discern the existence of creatures within 30 feet (9 meters) by scent. One way to "blind" a nupperibo was to confront it with an outrageous smell.

Nupperibos were genderless creatures.

Personality
Nupperibos had barely anything that could count as having a personality. They lacked all sorts of ingenuity to develop anything that resembled combat strategy on their own and even when somebody directed them, all they could do was to try to overwhelm with their numbers.

They followed the telepathic orders of any devil.

Combat
Nupperibos generally fought with their claws, but were sometimes given simple weapons like clubs. When more than ten nupperibos ganged up on the same opponent, they generated an effect that was similar to cause fear against the one they were ganging up on. However, such behavior was only displayed on order from a superior devil. However, they were surrounded by a fear-inducing aura that could similar effects at all times.

Killing them was very hard. They had a continuous regeneration ability that was slow to heal wounds but very strong. Even when burnt down to ash, a nupperibo's regeneration ability brought it back to full health if given enough time. There were two ways to deal with this ability. First, this ability had the peculiarity to work only while the nupperibo was on one of the Lower planes, meaning if the nupperibo was brought away from there, it could be permanently killed. Second, the nupperibo's regenerative abilities did not work on wounds inflicted to them by holy things like a holy weapons or holy water.

Nupperibos were relentless warriors who never lost their fighting morale and were completely immune against any effects that tampered with their minds.

Society
Like lemures, nupperibos were at the bottom of the infernal hierarchy. They lacked true names.

Nupperibos were the target of abuse at the hands of other devils who outranked them.

History
Nupperibos were counted among the baatezu and the baatezu claimed that they were part of their race. This was a lie, the race of the nupperibos, or to be more precise what the nupperibos eventually matured into, existed on Baator for a longer time than the baatezu did. Whatever they were, when the baatezu came to Baator, this race disappeared.

Being the original denizens of Baator, nupperibos naturally grew from larvae that were left alone and were expected to grow into mature specimen of their race if given time. However, the baatezu, who claimed that they were the first denizens of Baator, perpetuated a lie that the nupperibos were members of their race and turned them into lemures to build them artificially into their hierarchy. The truth that the nupperibos were not baatezu was leaked by the yugoloths at some point during the 14 century DR.