Homebrew Dwellers Species Details

Dwellers are the remains of crumbled civilizations and remote outposts that were forgotten by their country. Centuries of interbreeding have left them a feral blend of Elven, Human, Orcish and more bestial races resembling stooped, feral humans with wide mouths, filled with pointed teeth, retractable claws on their hands and feet, long wide ears somewhere between an elf's and a bat's. Their long coarse hair hangs lank over their shoulders, blending into a wiry fuzz that cover's their entire body, more akin to a short haired dog's fur than a Human's body hair. Thin flaps of membranous skin start at the wrist, connect to a small bone jutting out from the elbows, line the side of the abdomen, and connect down to the knees and ankles forming a continuous fin-like patagium that can be used to glide from a height, slow falling, and aid in manuevablity under water. The Dwellers are not actually capable of flight, and cannot breathe underwater, but are quite maneuverable nonetheless. They dwell in shallow burrows and caves in the side of isolated mountains and underground passages. Maybe it's the second set of arms, their it's the overall bestial appearance, the stench, something in their pheromones, or the odd shrieking, wheezing, and clicking they constantly emit, but almost all civilized, and even many bestial races are extremely unsettled by proximity to Dwellers. 

Feed on carrion or attack opponents to gain temp HP proficiency mod times a day. Disadvantage on all Charisma checks with Humanoids.

Dwellers Traits

Dwellers are creepy, carnivorous mixed-breed bat people.

Chiropteran

Dwellers have Darkvision out to 90 feet and may cast Feather Fall at will. Feather Fall is added to their list of spells known, and always counts as prepared. 

Carrion Feeder

Using their sharpened fangs and oversized mouths, along with their long, retractable claws, Dwellers are quite capable of shredding and devouring corpses or smaller foes in seconds, and grievously wounding humanoid opponents. Dwellers deal 1d6 Piercing or Slashing damage with their bite and claw attacks. Eating a corpse gives the Dweller 3d4 + Constitution modifier Temporary HP. Dwellers also get disadvantage on all Charisma checks when dealing with most humanoids.