Mane, Stygian

Family: Devils

Medium fiend, neutral evil

Armor Class 16 (natural armor)
Hit Points 37 (5d8 + 15)
Speed 40 ft., swim 50 ft.

16 (+3) 16 (+3) 16 (+3) 8 (–1) 12 (+1) 8 (–1)

Skills Perception +3, Stealth +5
Damage Resistances cold; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities poison
Condition Immunities paralyzed, poisoned
Senses darkvision 60 ft., passive Perception 13
Languages Abyssal, Infernal
Challenge 2 (450 XP)


  • Amphibious. The mane can breathe air and water.
  • Pack Tactics. The mane has advantage on an attack roll against a target if at least one of the mane’s allies is within five feet of the mane and the ally isn’t incapacitated.
  • Slimy Skin. The stygian mane has advantage to escape from the grappled or restrained condition.


  • Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage and the target must succeed at a DC 13 Constitution saving throw or become paralyzed for one minute.


Stygian manes have a vaguely reptilian or fish-like appearance, with a slick rubbery hide and yellowish spines that begin at their brow and protrude all the way down their back. The fangs of a stygian mane drip with horrid venom.

Stygian manes are most often found in the Stygian Swamps of the Abyss, where demon lords recruit them as guards and chattel minions. Although seldom encountered outside of Styx, the Abyss, and the Rings of Hell, they can be encountered in the mortal realms as summoned minions or in thin spots between the planes.

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Tome of Horrors 2020, (C) 2020, Necromancer Games

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