Skin Devil

Medium monstrosity (titanspawn), chaotic evil

Armor Class 13
Hit Points 75 (10d8 + 30)
Speed 30 ft.

STR	DEX	CON	INT	WIS	CHA
13 (+1)	17 (+3)	16 (+3)	12 (+1)	13 (+1)	15 (+2)

Skills Deception +6, Insight +5, Stealth +5
Condition Immunities charmed, frightened
Senses darkvision 60 ft., passive Perception 11
Languages Common plus one other
Challenge 3 (700 XP)

Special Traits

• Ambusher. The skin devil has advantage on attack rolls against any creature it has surprised.
• Steal Skin. If a skin devil deals 6 or more points of damage to a humanoid target with a single claw attack, it removes sufficient skin to grow a disguise identical to the target. It must use this skin sample within 24 hours. During its next long rest, the skin devil grows a new disguise out of the bits of stolen skin. Upon completion, it has a nearly flawless disguise; it has advantage on Deception checks made to impersonate the target whose skin it wears. The disguise lasts for 1 week before deteriorating to the point that it is unusable.
• Surprise Attack. If the skin devil surprises a creature and hits it with an attack during the first round of combat, the target takes an extra 10 (3d6) damage from the attack.

Actions

• Multiattack. The skin devil makes two melee attacks.
• Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage.

About

A “skin devil” is a monstrosity that looks like ahumanoid, but one whose skin has been removed, like a corpse in some necromancer’s lab, to reveal glistening muscle and pulsing veins from head to toe. Odd patches of skin cling to parts of its body.

Spawn of Gormoth. A skin devil is a creature in constant agony, knowing peace only when it clothes its fleshless form in a humanoid’s stolen skin. Intelligent and murderous, these creatures are exceptionally capable mimics; not truly shapechangers, they seem to gain some portion of a victim’s skills, mannerisms, and even personality through a stolen skin. A skin devil that can take even a tiny scrap of hide from a victim can place the flesh over its heart and, within one night, transform into a nearly perfect likeness of the “donor.” This disguise is only temporary, however, starting to rot almost immediately and becoming useless after no more than a week (by which time the skin devil has usually singled out its next victim).

Cruel and Deceitful. The skin devil prefers to stalk its next victim for some time, working its way into that person’s confidence and attacking suddenly when least expected. Stories describe skin devils stalking quietly through large towns for months, leaving behind a trail of bodies until they are finally discovered and destroyed. Only if directly confronted with superior skill or numbers does the creature flee, seeking easier prey in greener pastures elsewhere.