May appear as a random boss in a Chalice Dungeon.
The Abhorrent Beast may be the toughest random boss you'll face. Be on your toes, always dodging for the duration of the fight. His punches and swipes hit hard, and reach much farther than you think. Make sure he's done with a combo before leaning in to damage him yourself. Be sure to immediately dodge away too, as there's barely any time to even move in this (honestly, pretty cheap) fight. When he powers up halfway through the battle, be sure to sidestep his two-handed attack, as it'll now send a damaging sound wave forward from his fists.