Derro Dement

Small humanoid (derro), chaotic evil

Armor Class 16 (scale mail)
Hit Points 55 (10d6 +20)
Speed 30 ft.

12 (+1) 16 (+3) 15 (+2) 11 (+0) 4 (-3) 9 (-1)

Skills Perception -1, Stealth +5
Senses tremorsense 60 ft. (blind beyond this radius), passive Perception 9
Languages Dwarvish, Undercommon
Challenge 3 (700 XP)


  • Dement Poison. The derro dement smears its handaxe and its crossbow bolts with dement poison. A creature hit by the handaxe must make a successful DC 15 Constitution saving throw or become frightened. While frightened this way, the creature also has truesight (60 feet). A frightened creature repeats the saving throw at the end of each of its turns, ending the effect on itself with a success.
  • Magic Resistance. The derro dement has advantage on saving throws against spells and other magical effects.
  • Sunlight Sensitivity. While in sunlight, the derro dement has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.


  • Multiattack. The derro dement attacks once with its javelin and once with its handaxe.
  • Handaxe. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 6 (1d6 + 3) slashing damage, and the creature is exposed to dement poison.
  • Javelin. Melee or Ranged Weapon Attack: +5 to hit, reach 5 ft. or range 30/120 ft., one target. Hit: 6 (1d6 + 3) piercing damage.
  • Light Crossbow. Ranged Weapon Attack: +4 to hit, range 80/320 ft., one target. Hit: 7 (1d8 + 3) piercing damage, and the creature is exposed to dement poison.


All derro are corrupted and borderline insane, but the derro living in the bowels of the Scarlet Citadel are worse than most. They were driven out of their clan 150 years ago for carrying their worship of the demon lord of bats, to extremes not even their fellow derro could tolerate. The cult’s high priest led them until they discovered a cavern filled with monstrous bats, where they settled and carved out a temple to their foul deity.

Section 15: Copyright Notice

The Scarlet Citadel. © 2021 Open Design LLC. Authors: Steve Winter, Wolfgang Baur, Scott Gable, and Victoria Jaczo.

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