Ugguguh

The endless drowning

Ugguguh is a demon lord with the apearence of a kraken with the upper body of a disfigured siren. Instead of Tenctaclues Ugguguh spouts long strong arms with multiple joints in them. Her home in the abyss is a network of caverns which she maneuvers trough not by swimming but by grasping the walls. They are filled with water as well as pockets of air, acid and a variety of other liquids and gasses, Ugguguh can breath in all of these and maneuvers to drown her prey in whatever works. She takes delight in drowning a struggeling prey and often leds them live for hours repeatedly allowing them to grasp for air before finally ending there life. 
Some deranged seaman offer her prayer for safety or use her name to curse others at sea but no sane man would worship a demon lord.