Fey Ancestry. Krebbyg has advantage on saving throws against being charmed, and magic can't put the drow to sleep.
Gunslinger. Being within 5 feet of a hostile creature or attacking at long range doesn't impose disadvantage on Krebbyg's ranged attack rolls with a pistol. In addition, the drow ignores Cover and Cover when making ranged attacks with a pistol.
Sunlight Sensitivity. While in sunlight, Krebbyg has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.
Innate Spellcasting. Krebbyg's spellcasting ability is Charisma (spell save DC 12) It can innately cast the following spells, requiring no material components:
At will: dancing lights
1/day each: darkness, faerie fire, levitate (self only)
Multiattack. Krebbyg makes two shortsword attacks.
Shortsword. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit:7 (1d6 + 4) piercing damage.
Poisonous Pistol. Ranged Weapon Attack: +6 to hit, range 30/90 ft., one target. Hit:9 (1d10 + 4) piercing damage plus 11 (2d10) poison damage.