Rattar

All decent folk find the common rat repulsive. Harbinger of disease, it scavenges on our waste-heaps and frightens our children. How immeasurably worse then is the foul rattar--standing on its hindlegs in foul parody of a human. Rats as tall as man, and blessed with the most vile intellect and cunning. They are the dark side of our souls, come to destroy us for our sins.
— Edgar Cameron, Jaxhydean preacher
Quick and silent, ratfolk exist as outsiders no matter where they are, but they let nothing get in their way.
Ability Score Increase. Your Dexterity score increases by 2.
Age. Rattar commonly live no more than 30 years, maintaining good vitality and longevity toward the end. Rattar reach adulthood at age 3, with the fur on their bodies turning grey once they've lived about 27 years. Alignment. Rattar are strongly inclined to follow their own path, preferring freedom over all else, which makes them typically chaotic.
Size. Ratfolk look thin and frail, standing about 4' and 5' but some can grow as tall as 6ft, and weighing around 90–110 lbs. Your size is Medium.
Speed. Your base walking speed is 35 feet. Rattar are quick on their feet.
Darkvision. You are used to dark areas, and your eyes have adjusted to such. You can see in dim light within 60 feet of you as if it were bright light, and darkness as if it were dim light. You can't discern color in darkness, only shades of grey.
Sneaky. You have proficiency in the Stealth skill.
Thin Frame. You can squeeze through spaces as if you were a Small creature.
Languages. You can speak, read, and write Common and one other language of your choice (usually one of the "civilized" tongues.
Subrace. Rattar are separated into three subraces, Dark, mottled, and White, which come with different benefits. Choose one of these subraces.
Dark Rattar Dark Rattar are cynical and introverted, and they have a knack for blending into darkness. They prefer to live underneath, and on the fringes of cities forming a parasitic relationship with other city inhabitants. Many disdain authority, but simply attempt to keep away from law enforcement, believing they will be left alone if they don't make too many waves. The dark hair on their bodies gives them an advantage on Stealth checks in dark environments.
Ability Score Increase. Your Intelligence score increases by 1.
Duplicity. You have proficiency in the Deception skill.
Shadow Blend. Your fur conceals you. You can attempt to hide in areas of dim light.
Mottled Rattar Mottled fit well the rebellious nature of their race; they have no love for civilization and laws, preferring the freedom and unpredictability of the wilderness. Most Mottled ratfolk are cautious and un-trusting of others who come near their territory, but they have keen eyes and quick feet, giving them a distinct advantage when they they have to stay moving in a hostile environment.
Ability Score Increase. Your Wisdom score increases by 1.
Keen Senses. You have proficiency in the Perception skill.
Mottled Endurance. You don't get stopped easily. During your first turn in combat, opportunity attacks against you have disadvantage, and difficult terrain doesn't cost you extra movement.
Nose for nature: Mottled Rattar gain advantage on Survival rolls made to find food and water while in nature.
White Rattar The children of Jaxson, White rattar Tend towards good. While society is un-accepting of rattar in general, the white try to put up with the intolerance leveled at their race, generally attempting to prove such bias wrong. Living among the other races in communities or in "ghettos". They tend to live in cities and towns above ground.
Ability score increase. Your Constitution score increases by 1.
Intuitive Demeanor. White rattar are exceptionally quick to determine how they are perceived by others, therefore they have proficiency with insight checks. 
Calming Presence . White rattar have advantage on persuasion checks trying to calm a situation down.

Basic Information

Anatomy

Rattar are bipedal rat-like humanoids, standing usually under five feet tall (although depending on social status and diet can grow to over six). Dark furred, with a long, naked tail. Slender and agile, with dexterous clawed hands, and a pointed face full of yellow incisors.

Genetics and Reproduction

A highly fecund race, breeding females can give birth to litters of 3-6 rattar young after a 3 month gestation.

Growth Rate & Stages

Rattar reach maturity quickly, but live fairly short lives. A rattar is considered an adult by the age of 3 and rarely live past 30.

Ecology and Habitats

Rattar dig labyrinthine warrens, usually beneath the settlements of surface-dwelling humanoids. They scavenge food and supplies from their unwitting neighbours, and will attack and eat those humanoids if the chance arises.

Dietary Needs and Habits

True omnivores, rattar scavenge waste and carrion, predate sapient and non-sapient creatures alike, and steal and pillage from other races.

Additional Information

Perception and Sensory Capabilities

Born in tunnels under human settlements, rattar are highly adapted for dark conditions. Darkvision 60 ft.

Civilization and Culture

Naming Traditions

Rattar names are like their screeching language: harsh sounds, with many sibilants and hard consonants. They may use clan identifiers, and take menacing titles as they gain status.

Gender Ideals

As a species reliant on rapid birth rates to counter high mortality, females are most often treated as little more than breeder slaves. When a female rattar overcomes this lowly station to rise through the ranks, she is therefore likely to be very formidable indeed.

History

Jaxhyde, in his light and grace, did not create the human race with the ability to navigate the dark of the night. They traveled and worked in the daylight hours and the night was for rest, safe in their homes and by their fires. But there are places beneath the bright human settlements that are always in shadow. Caves, tunnels, and caverns, which the sun does not light, a darkness that fires and torches cannot pierce. Humans had an inherent fear of these dark places, and that fear preyed on them, gnawed at their souls, and became manifest.
The Gnawing Dark stalks those tunnels now, a creeping, prowling entity of primordial fear and unending hunger. It crouches in the shadows beyond human lights, watching, waiting, picking off those foolhardy enough to venture beyond the safety of the torches.
And in time, so too would its children would begin to claw and bite at the edges and roots of civilisation. The rattar skitter and scurry like shadows flit before a candle, a growing horde of insidious, hateful rat-kin, a rising tide of parasitic vermin.

Scientific Name

Rattus Sapiens

Lifespan

30 years

Average Height

4-5 feet

Average Weight

90-110 lbs