Demon, Alpha Yek

With a flattened, lupine face and skin pulled taught over its skeletal frame, the creature is terrible to behold. It wears entrails and bones of previous victims over its dark red fur and has black spikes jutting from its spine.

Favor Warlike Lords. While demon lords are popular overlords for yek demons, at other times they swear themselves to hierophant liches, umbral vampires, or anyone else who can guarantee them a steady supply of fresh, strong bone, frequent combat, and wanton destruction.

Pack of Cannibals. Yek are loathsome fiends, hated by other demons because of their cannibalistic tendencies. They are creatures that do not care what flesh they feed upon but prefer it to be raw and wriggling. Though vicious fighters alone, they are rarely encountered without their pack. Even the most powerful of fiends can be brought down by a pack of yek.

Pack Loyalties. The lesser yek demons are completely subservient to their pack leader, sometimes called the alpha yek, and follow that leader’s direction in all things. This includes targets to attack, to which demon lord to swear obeisance, and when to betray one demonic warlord for another. They always move together as a group, directed by the strongest. When a yek pack leader is slain, the lesser yek scatter in complete disarray. They choose another leader within a few days, celebrating the occasion with an unholy feast. Some demonologists have confirmed that the weakest member of the pack is devoured by the new leader during this feast.

Alpha Yek

Medium fiend (demon), chaotic evil
Armor Class 16 (natural armor)
Hit Points 129 (16d8 + 48)
Speed 30 ft., climb 30 ft.
16 (+3) 16 (+3) 16 (+3) 15 (+2) 13 (+1) 10 (+0)

Saving Throws Str +7, Dex +7, Con +7, Int +6
Skills Perception +5, Stealth +7
Damage Resistances cold, fire, lightning; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 120 ft., passive Perception 15
Languages Abyssal, telepathy 120 ft.
Challenge 9 (5,000 XP)

Magic Resistance. The yek has advantage on saving throws against spells and other magical effects.

Pack Tactics. The yek has advantage on attack rolls against a creature if at least one of the yek’s allies is within 5 feet of the creature and the ally isn’t incapacitated.


Multiattack. The alpha yek makes one bite attack and two claw attacks. It can make a bone shard attack in place of a claw attack if it has a bone shard available.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 17 (4d6 + 3) piercing damage.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (4d4 + 3) slashing damage.

Bone Shard. Melee or Ranged Weapon Attack: +7 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 8 (2d4 + 3) piercing damage and the target must make a DC 17 Constitution saving throw. On a failure, a piece of the bone breaks and sticks in the target’s wound. The target takes 5 (2d4) piercing damage at the start of each of its turns as long as the bone remains lodged in its wound. A creature, including the target, can take its action to remove the bone by succeeding on a DC 15 Wisdom (Medicine) check. The bone also falls out of the wound if the target receives magical healing

A yek typically carries 3 (1d6) bone shards, which are destroyed on a successful hit. It can use its action to tear a bone shard from a corpse within 5 feet. Derro

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