Duergar are a subterranean subrace of dwarves; they are very short, yet stocky humanoids. They are very similar to dwarves, except they have dark skin (from dull gray to jet black) and the females cannot grow beards. They are typically evil, pessimistic, cynical and bitter. They show no mercy to their foes and take great pleasure in the pain of others.

Appearance: 4ft - 5.5ft. Standard medieval fantasy dwarf appearance. Dark skin. Bald. Dark eyes. Commonly have beards.
Size Modifier: Medium humanoid.

Known Languages: Common, Undercommon, Dwarvish, +1 choice

Ability Score Bonus: +2 CON, +1 STR

Racial Traits: Darkvision, Sunlight Sensitivity, Poison & Poisoned Resistance, Duergar Resilience, may cast Enlarge/Reduce spell (may only Enlarge self, once per long rest) at 3rd level.

Darkvision: You have superior vision in dark and dim conditions. You can see in dim light as though it were bright light, and in darkness as though it were dim light. You can’t discern color in darkness, only shades of gray.
Sunlight Sensitivity: You have poor vision above ground in natural daylight. While in direct sunlight or interacting with a creature in direct sunlight, you roll disadvantage on attack rolls and Wisdom (Perception) checks. (This is the responsibility of the player to enforce on themselves if they so desire, but it is otherwise not strictly enforced unless by a DM.)

(Condition) Resistance: If a creature has resistance to a condition type, you gain advantage when making saving throws against an effect that would apply that condition. (Example: you are hit by Cause Fear while you have Fear Resistance: you would roll your saving throw with advantage.)

(Damage) Resistance: If a creature or an object has resistance to a damage type, damage of that type is halved against it. (Example: you are hit by fire damage while you have Fire Resistance: that damage would be halved.)

Duergar Resilience: You have advantage on saving throws against illusions and against being charmed or paralyzed.