Medium demon, lawful evil

Armor Class:

Hit Points: 84hp (13d8+4) 13d8+4

Speed: 30 ft , can hover

STR

16 +3

DEX

12 +1

CON

14 +2

INT

8 -1

WIS

14 +2

CHA

10 +0

Saving Throws: Con +5, Wis +5

Skills: Shadow Bracers. A voidwalker’s existence outside the Twisting Nether is stabilized by its bracers. If a voidwalker is dispelled, banished, or knocked unconscious, the bracers crack. If both are destroyed (AC 15, HP 10 each), the voidwalker vanishes, returning to the Nether.   Eternal Obedience. The voidwalker follows its summoner’s commands to the letter. If it is not given a new command, it repeats the last one even if it’s no longer tactically viable.

Damage Resistances: bludgeoning, piercing, and slashing from nonmagical weapons

Damage Immunities: cold, necrotic, poison

Condition Immunities: charmed, frightened, poisoned

Senses: darkvision 120 ft., passive Perception 12

Languages: Eredun

Challenge Rating: 4 ( 1,100 XP)

Proficiency Bonus: +2

Actions

Void Slam. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 3) force damage, and the target must succeed on a DC 13 Wisdom saving throw or have disadvantage on attack rolls against anyone except the voidwalker until the end of its next turn.   Tormenting Grasp. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 9 (2d4 + 3) psychic damage. The target sees flashes of its worst memories and must make a DC 13 Wisdom saving throw or be compelled to use its next action to attack the voidwalker.

Suggested Environments

Voidwalkers are not natural denizens of the world and rarely linger without purpose. When they do appear, it's often the result of corruption, summoning rituals, or dimensional instability. Consider these environments:   Fel-tainted ruins or summoning circles Where warlocks or cultists have ritually summoned demonic servants.   Twisting Nether incursions Cracks between dimensions—portals, rifts, or zones of chaotic planar energy.   Dungeons tied to the Burning Legion or Void Think of corrupted libraries, dark cathedrals, or strongholds of forbidden magic.   Shadow-aligned regions Ancient crypts, void-scarred wastelands, or moonless forests teetering between planes.   Magical anomalies Areas where ley lines have ruptured, or time and space are frayed by arcane misuse.   Underworld-like realms Sub-realms, dreamscapes, or abstract planes shaped by fear, memory, or entropy.