Abhorrent Beast

A hulking, black-furred beast: its eyes glow a sinister red, bony thorns erupt from its back and arms, and its fur crackles with electricity. This monster roams the Loran dungeons, attacking with its wicked claws and gusts of wind. In Yharnam, the beggar found in the woods will transform into an Abhorrent Beast when provoked. Remarkably, he continues to speak to the Hunter during their fight, comprising one of very few beasts still able to speak.

In-Game Information
This information comes directly from the game, or from official supporting materials.

Description
A description of facts about this subject, with minimal speculation.


 * Despite not dealing bolt damage with its attacks, sparks and bolts of electricity feature in many of the Abhorrent Beast's moves
 * Certain internal sources, such as the so-called "living livers" cut before release, character model IDs and AI scripts, refer to the Abhorrent Beast as 嵐の獣, lit. "beast of storm"; in such sources, Darkbeast Paarl and Loran Darkbeasts use the same name appended with 骨, "bone"
 * Weak to slow poison
 * Besides the beggar's questline, normally only found in Loran's roster of enemies and bosses
 * Drops the Beast (+50) rune

Theories
Speculation and related theory documents, which should not be treated as fact.
 * Rune analysis in The Semiotic Beast by Vlad Lad: his rune, "Beast", reveals his relationship to his own bestial nature and provides a window into his character.

Reference

 * 1) Thank you to bloodborne-wiki for their hard work gathering lore notes, item descriptions and dialogue.