Nupperibo, Harbinger of the Vermin Cloud
“Grotesque and bloated, the Nupperibo’s twisted flesh hides a savage hunger that devours hope and flesh alike!”
A Nupperibo is a grotesquely bloated humanoid with pallid, sagging flesh stretched taut over a misshapen frame. Its face is distorted and asymmetrical, marked by malformed eyes, a wide maw filled with jagged teeth, and patches of slick, oily skin that glisten unnervingly. Its stubby limbs end in claw-like fingers, and a faint, sour odor of decay surrounds it.
Behaviour
Nupperibos are wary and erratic creatures, oscillating between sluggish apathy and sudden bursts of savage aggression. They communicate in guttural noises and eerie gurgles, often appearing confused or distracted. Though solitary by nature, they may gather in small, uneasy groups when drawn by abundant prey or arcane forces.
Habitat
These aberrations dwell in fetid swamps, dark caves, and abandoned ruins where the veil between reality and nightmare thins. They favor places thick with rot and corruption, often nesting in pools of stagnant water or piles of refuse that sustain their grotesque form.
Modus Operandi
Nupperibos ambush unwary travelers with surprising speed, using their bulk and claws to rend flesh and crush bone. They are known to stalk victims silently, then unleash primal fury in sudden, devastating attacks. When threatened, a Nupperibo may retreat into its lair or attempt to overwhelm foes with sheer brutality.
Motivation
Driven by an insatiable hunger and a vague, instinctual desire to survive, Nupperibos are mindless predators at their core. Some may be warped remnants of cursed beings or twisted by dark magic, unknowingly serving eldritch powers or guarding forbidden secrets.
Nupperibo 5e
Nupperibo 5e
Nupperibo 3.5
Nupperibo
Medium fiend (devil), typically lawful evil
Armor Class: 13 (natural armor)
Hit Points: 11 (2d8 + 2)
Speed: 20 ft.
STR | DEX | CON | INT | WIS | CHA |
---|---|---|---|---|---|
16 (+3) | 11 (+0) | 13 (+1) | 3 (–4) | 8 (–1) | 1 (–5) |
Skills: Perception +1
Damage Resistances: acid, cold
Damage Immunities: fire, poison
Condition Immunities: blinded, charmed, frightened, poisoned
Senses: blindsight 20 ft. (blind beyond this radius), passive Perception 11
Languages: understands Infernal but can’t speak
Challenge: 1/2 (100 XP) • Proficiency Bonus +2
Cloud of Vermin. Any creature, other than a devil, that starts its turn within 20 feet of one or more nupperibos must succeed on a DC 11 Constitution saving throw or take 5 (2d4) acid damage. A creature within the areas of two or more nupperibos makes the saving throw with disadvantage.
Driven Tracker. In the Nine Hells, the nupperibo can flawlessly track any creature that has taken damage from any nupperibo’s Cloud of Vermin within the previous 24 hours.
Actions
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage.
Devil, Nupperibo

Family: Devils
Medium fiend (devil), lawful evil
Armor Class 11 (natural armor)
Hit Points 4 (1d8)
Speed 30 ft.
STR | DEX | CON | INT | WIS | CHA |
---|---|---|---|---|---|
10 (+0) | 10 (+0) | 10 (+0) | 4 (-3) | 10 (+0) | 4 (-3) |
Damage Resistances cold; bludgeoning, piercing, and slashing from nonmagical attacks that are not silver
Damage Immunities fire, poison, psychic
Condition Immunities charmed, frightened, stunned, poisoned
Senses darkvision 60 ft., passive Perception 10
Languages Infernal (cannot speak)
Challenge 0 (10 XP)
SPECIAL TRAITS
- Devil’s Sight. Magical darkness doesn’t impede the nupperibo’s darkvision.
- Magic Resistance. The nupperibo devil has advantage on saving throws against spells and other magical effects.
ACTIONS
- Claws. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 2 (1d4) slashing damage.
- Spear. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 3 (1d6) piercing damage.
ABOUT
Nupperibo are shambling, ambulatory meat sacks – vaguely humanoid blobs of pus and flesh with a putrid yellow-green pallor – with the horrified faces of the accursed damned. Damned souls raised from the Styx to do the bidding of the princes of Hell, nuperribo are largely mindless and attack in mobs with found weapons or slashes from their rotted claws. They stand five feet tall and weigh about 100 pounds.
Devils constantly punish these tortured spirits, which they consider even lowlier than lemures and manes. They are used as fodder in their never-ending wars, with a typical nupperibo army consisting of thousands of these creatures. Nupperibos unerringly follow the orders of their commander. They are relentless in their pursuit and attack and continue to assault anything in their path until ordered to stop by their commander. A nupperibo killed in battle is 99% likely to be reformed (by a duke or arch devil) into another nupperibo; the remaining 1% are “promoted” to lemure status, having proved their worth in combat.
Section 15: Copyright Notice
Tome of Horrors 2020, (C) 2020, Necromancer Games

A Nuppeppo; appearing at midnight in ruined temples or near graveyards–a chunk of dead flesh walking by itself.
Grimoire of Cosmic Entities Volume One By Eli Atkinson, William Church and Serge W. Desir, Jr.
Original Concept by Serge W. Desir, Jr.Full netbook can be found on the following website
A barely discernable humanoid head and a pair of pseudopods are the only appendages on what is best described as a heaving mass of red clay and mud. Aside from pock marks and dents where the eyes and nose should be, the head is featureless. Indeed, so too is the entire form. From time to time, it seems as if something buried beneath the creature’s mass struggles to pushes free. As it reacts to your approach, shuffling aggressively towards you, whatever lies within the creature becomes even more animated.
A misshapen, damned being native to the Nine Hells of Perdition. Bearing a passing familiarity to the better known lemure and sharing many of the same duties, the nupperibo is even more detested by the devils of Hell than its lower ranked cousin. Interestingly enough, it can never be promoted into another form of devil; instead, it must be demoted to a lemure in order to progress. Even more intriguing is the fact that cornugons, gelugons, and pit fiends do all they can to ensure that they never advance beyond 9 HD; conversely, barregons often attempt to secretly coral dozens of nupperibo secretly in order to allow them to advance to 14 HD.
At about 5 ½ feet tall and weighing about 250 pounds. Blind, deaf, and mute, a nupperibo is susceptible to telepathic messages from other devils.
Nupperibo
Nupperibo | |
Medium outsider (Evil, Extraplanar, Lawful) | |
Hit Dice | 3d8+3 (16 hp) |
Initiative | +4 ( Improved Initiative) |
Speed | 20 ft. |
Armor Class | 15 (+5 natural), touch 10, flat-footed 15 |
Base Attack/Grapple | +3/+4 |
Attack | Slam +5 melee (1d6+1) |
Full Attack | 2 slams +5 melee (1d6+1) |
Space/Reach | 5 ft. /5 ft. |
Special Attacks | Burning strike |
Special Qualities | Damage reduction 5/good or silver, Darkvision 60 ft., immunity to fire and poison, acid resistance 10, cold resistance 10, metamorphosis, mindless, see in darkness, Spell Resistance 14 |
Saves | Fort +4, Ref +3, Will +3 |
Abilities | Strength 12, Dexterity 11, Constitution 12, Intelligence -, Wisdom 11, Charisma 6 |
Feats | Improved Initiative, Weapon Focus (slam) |
Environment | The Nine Hells of Perdition. |
Organization | Solitary, gang (2d6) or mixed mob (4d10 nupperibo and 4d10 lemures) |
Challenge Rating | 2 |
Treasure | None |
Alignment | Always Lawful Evil |
Advancement | 4-14 HD (Medium) |
Combat
It is dedicated to physically harming and oppressing other creatures. Although utterly mindless, it is instinctually driven to attack those creatures unassociated with Lawful Evil. It will attack any non-devil as soon as it is aware of such a creature’s presence and can only be stopped by being destroyed or order to cease by a devil. Needless to say, it has no strategy or tactic other than to seek and destroy.
A nupperibo’s natural weapons, as well as any weapon it wields, are treated as evil-aligned and lawful-aligned for the purpose of overcoming damage reduction.
Burning Strike (Su): Its slam attack leaves behind a slimy residue that eats through the flesh of those it strikes. Creatures struck by the nupperibo’s slam take one-half the damage the following rounds for a number of rounds equal to the its Constitution modifier (one round for the average nupperibo).
Metamorphosis: A nupperibo that is left on its own will continue to advance, eventually beginning a metamorphosis into something greater. For every HD beyond 9 that a nupperibo advances, it gains a 1 point increase to all of its mental ability scores. It loses the Mindless trait and replaces it with telepathy 50 ft. The nupperibo also begins dealing 1 point of Wisdom damage on its slam attack. Nupperibos of 12 HD and greater grow vestigial wings, developing a Fly speed of 20 feet with poor maneuverability.
At 14 HD, a nupperibo gains the spell-like ability greater teleport (self plus 50 pounds only) at will. It should be noted that very few nupperibo survive to evolve that far. Usually they are demoted into lemures long before any of these changes can take place.
Metamorphosis of the Nupperibo by Hit Dice | |
Nupperibo Hit Dice | Metamorphosis Effect |
10 HD | Intelligence +1, Wisdom +1, Charisma +1, remove Mindless trait, telepathy 50 ft., slam attack deals 1 point of Wisdom damage |
11 HD | Intelligence +1, Wisdom +1, Charisma +1 |
12 HD | Intelligence +1, Wisdom +1, Charisma +1, wings (fly 20 ft. [poor]) |
13 HD | Intelligence +1, Wisdom +1, Charisma +1 |
14 HD | Intelligence +1, Wisdom +1, Charisma +1, greater teleport (self plus 50 pounds) at will |
15 HD | Metamorphosis into a barregon (gate devil) |
Mindless (Ex): Nupperibos are immune to mind affecting effects.