Osyluth

Osyluths, sometimes called bone devils, served as taskmasters and interrogators of the devils. They act as law-enforcement throughout Hell, leading many devils to fear their presence. Bone devils delighted in torturing mortals and devils alike, causing physical and mental suffering wherever they go. Osyluths, along with hamatulas, made up the bulk of the Servants of Mammon, Mammon's personal army.

Description
Bone devils appeared to be skeletal humanoids a tall, emaciated fiend with dried skin stretched so tight as to outline and emphasize every bone in its body. It had a skull-like head and a bony scorpion-like tail and exudes a stench of decay. An osyluth stood about 2.74m (9ft) tall and weighed roughly 227kg (500lbs). Osyluths often served as the informers and police of the Nine Hells, monitoring and reporting on the activities of other devils.

Promotion
When an ossyluth was promoted to an amnizu, it underwent a process that was potentially lethal. The process consisted of racking, drawing, and quartering. When the osyluth got quartered, it naturally lost its limbs, but new smaller ones regrew. Once every limb was gone and replaced with a smaller one, the skin of the face was peeled to create a cowl that the would-be-amnizu had to remove through will-power, lest it died.

Society
Osyluths fulfilled a function similar to a police force in Baator. To be more precise, they were a moral police who looked out for moral decay in the infernal society. Devils who were not upholding the ideals of the lawful evil philosophy were captured and punished by them. This, meaning the prospect of punishment not the supervision itself, was the reason why other devils hated and sometimes killed osyluths, the latter only under utmost secrecy.

Every century, one thousand osyluths were promoted at once to the hamatula-station at once and one thousand low-ranking devils were promoted to osyluths to fill the gap. Nobody really knew how, but this fact got somehow distorted when it reached mortals, making them believe for a long time that the entirety of Baator held only a thousand osyluths.

History
The famed Paladin Kern Desanea, the "Hammerseeker", fought with an osyluth during his adventures in the Moonsea region.

Appearances

 * Pool of Twilight