Devil

Biodata

Feature	Details
Name	Devil
Original Name	魔鬼
Species/Race	Infernal outsider
Alignment	Lawful Evil
Affiliation	The Nine Hells of Baator 197 372
Occupation/Role	Soldiers of the Blood War, contract brokers, administrators, spies, and soul harvesters 197 418 532
Status	Active across Baator and other planes
First Appearance	Chapter 79 79

Power Progression

Devil advancement is hierarchical rather than a fixed class path. Promotion, demotion, soul-energy allocation, and Devil Shaping can alter a devil’s form and rank. 199 532 560

Stage / Realm / Level	Chapter	Notes
Lemure	199	Lowest and most punitive form; severe failure can result in demotion into a mindless Lemure.
Lesser Devil	79	Imps possess the baseline infernal traits of darkvision, regeneration, poison and fire immunity, and acid/cold resistance.
Intermediate / Advanced Devil	535	Devils above the lowest ranks gain at-will self-only Greater Teleportation, enabling rapid infiltration and retreat.
High-ranking Devil	116 198	Bone Demons and Horned Devils command or manipulate lesser devils, use magic, and survive through caution rather than reckless combat.
Pit Fiend	197	Stands near the peak of Baator’s normal evolutionary hierarchy; only a small number of dukes and layer lords rank above them.
Duke / Layer Lord	197 392	Infernal rulers possess independent forms, command legions, and exercise authority over other devils. A layer lord can directly contend with deities within their own layer.

Nature

Devils are evil but intensely ordered beings. Their society is built on rank, law, contracts, promotion, and punishment; unlike demons, they favor calculated advantage over impulsive violence. 197 372 532

A devil’s identity is defined less by horns, wings, or infernal blood than by mentality: cold self-certainty, manipulation of weakness, and the belief that its actions are correct. Asmodeus identifies this outlook as the essence of a “true devil.” 372

Appearance

Devils have no single universal appearance. Their bodies vary by species, rank, and infernal transformation, though red skin, horns, wings, tails, claws, and barbs are recurring traits. 372 406

• Imps are small winged devils capable of serving as familiars. 79
• Spiked Devils are covered in armor-piercing spikes that turn grapples into impalement attacks. 197
• Horned Devils resemble smaller Pit Fiends and can command lesser infernal troops. 198
• Pit Fiends possess ember-like eyes and an overwhelming aura that can paralyze weaker mortals with fear. 197
• Exposure to Hell’s Plane Will can infernalize mortals, producing horns, claws, wings, red markings, and increasingly devil-like behavior. 372

Abilities & Skills

Innate Infernal Traits

The text identifies several traits shared by devils through the Imp’s baseline physiology. 79

• Darkvision — can see in darkness.
• Regeneration — recover from injury rapidly.
• Poison and fire immunity — unaffected by poison and fire damage.
• Acid and cold resistance — possess partial resistance to both elements.

Teleportation

Intermediate and advanced devils can cast self-only Greater Teleportation without daily limits. 535

• Enables ambushes, rapid battlefield repositioning, and extraction from unfavorable fights.
• Supports the devil legions’ hit-and-run doctrine.
• Allows commanders to preserve valuable troops rather than fight to destruction.

Infernal Magic

Higher-ranking devils commonly use spell-like abilities and conventional magic in combat. 197 198

• Horned Devils can cast Fireball and operate from protected rear positions. 198
• Pit Fiends can cast destructive fire magic with enough force to reduce adventurers and metal equipment to ash and molten iron. 197
• High-ranking devils prioritize interruption, ranged attacks, subordinate troops, and layered defenses over honorable duels. 198

Devil Shaping

Devils can reshape lower-ranked infernal beings into stronger forms through Devil Shaping. 560

• Twenty Dretches can be transformed into two Bone Demons, three Hook Devils, or—at far greater political risk—a Pit Fiend.
• The process can restructure a large low-rank force into a small elite formation in roughly one minute.
• Transformation is irreversible.
• Creating a Pit Fiend is politically dangerous because it produces a potential rival of equal rank. 560

Contracts and Corruption

Contracts are both legal instruments and sources of infernal expansion. Each signed agreement increases Hell’s influence, with contracts involving rulers, powerful mages, or religious leaders producing especially significant feedback. 430

• Devils exploit ambition, fear, desire, debt, and desperation to secure agreements. 372 585
• Infernal power granted to mortals can create a cycle of dependence, worship, and further corruption. 372
• Oaths alone have little value in Hell; carefully written contracts determine obligations and loopholes. 372 405
• The Ninth Layer’s Fraud Devils specialize in charm, mass persuasion, emotional manipulation, mind intrusion, and large-scale control magic. 418

Infernal Hierarchy

Infernal authority depends on control over soul-derived energy and the power to promote or demote subordinates. 533

• Layer Lords and dukes can demote even powerful devils with an order. 585
• Energy distribution determines who can grant promotion, appoint officials, and command loyalty. 533
• Failure is punished severely; a disgraced Pit Fiend may be demoted to a Scorpion Devil, Assassin Devil, Horned Devil, Ice Devil, Barbed Devil, or even a Lemure. 199
• Rebellion is structurally difficult because Hell’s lawful nature, superior authority, and the Plane Will all oppose uncontrolled uprisings. 501
• Devils constantly seek advancement because higher rank provides security against demotion and exploitation. 532 585

Society and Economy

The Nine Hells treat souls as their primary resource. Souls can be processed into energy, transformed into devils, used to fill bureaucratic positions, or exploited through long-term contracts. 408 532

• Low-ranking devils must pay a share of extracted soul-energy upward through the hierarchy before retaining anything for themselves. 532
• The Ninth Layer introduced elections, political parties, performance-based promotion, and temporary rank-based transformations to make advancement more competitive. 532
• Devils can lose their granted form immediately after losing office or failing performance standards. 532
• The Ninth Layer’s cyberpunk metropolis corrupts visitors through wealth, indulgence, debt, social pressure, and apparent freedom rather than open coercion. 532 811
• Fraud Devils market Hell as a place of pleasure, democracy, advancement, and opportunity while concealing the eventual harvesting of souls. 418

Military Doctrine

Devil legions are among the most organized and tactically capable armies in the multiverse. Retreat without permission can lead to horrific punishment or demotion, producing unusually rigid battlefield discipline. 197

• Formation warfare — Devils preserve organized ranks even while teleporting into combat zones. 533
• Attrition tactics — Imps, undead, and other expendable troops hold the line while stronger devils strike vulnerable targets. 535
• Teleportation raids — Advanced devils repeatedly infiltrate, attack, and withdraw before enemies can respond. 535
• Command exploitation — Once an enemy formation breaks down, devils focus coordinated attacks on commanders and weak points. 535
• Magical armament — Magic weapons are essential in the Blood War because ordinary weapons cannot reliably penetrate high-ranking fiends’ defenses. 398
• Discipline over frenzy — Demons may possess comparable teleportation, but their chaotic nature prevents them from matching infernal coordination. 535

Notable Devil Types

Type	Description
Imp	Small devil with telepathy, regeneration, elemental resistances, and familiar potential. 79
Bone Demon	High-ranking, cunning devil associated with violence, slaughter, manipulation, and binding rituals. 116 117
Horned Devil	Mid-ranking infernal commander capable of directing lesser devils and casting destructive spells. 198
Spiked Devil	Heavily spined combat devil whose body can pierce steel armor and punish grappling opponents. 197
Pit Fiend	Near-apex devil with immense magical power, fear-inducing presence, and authority over infernal forces. 197
Scorpion Devil	Intelligence-focused devil often employed by dukes and lords as a spy leader. 437
Insectoid Demon	A devil species created by Soth; six-armed, heavily armored, exceptionally loyal, and designed as an elite guard and executor. 408
Fraud Devil	A specialized spellcasting devil created to manipulate crowds, emotions, contracts, and social systems. 418
Spellbreaker Devil	High-ranking anti-mage devil capable of draining, disrupting, replicating, or storing magical and divine spell energy. 470

Relationships

• Asmodeus — Supreme Lord of the Nine Hells and ultimate authority over the infernal hierarchy; his mark can promote or demote nearly any devil below duke and layer-lord status. 372
• Zuo Si / Soth — Ninth Layer Lord who restructures devil society through contracts, elections, industrialization, new devil species, and soul-based economic expansion. 392 408 532
• Demons — Infernal enemies in the Blood War; devils rely on law, formation discipline, and tactical planning to offset demonic numbers and chaos. 197 535
• Mortals — Primary targets for contracts, corruption, soul acquisition, and ideological manipulation. 372 418
• Paladins and holy warriors — Particularly valuable corruption targets because their fallen souls represent the loss of purity, order, and goodness. 260 459

Story Role

• A Bone Demon bound within a tomb attempts to manipulate Zuo Si’s group into performing a human sacrifice. Zuo Si rejects its terms, reinforces its binding array, and has it attacked with silver-plated mithril javelins. 116 117
• Devils led by the Pit Fiend Egrys assault Dragonspear Castle on Dispater’s behalf, seeking to capture Raymond/Zuo Si. Their invasion is defeated after Egrys is killed by a Slay Living attack delivered through Zuo Si’s invisible Imp familiar. 197 198
• After becoming Lord of the Ninth Layer, Zuo Si gains authority to create and organize new devil species, including Insectoid Demons and Fraud Devils. 392 408 418
• The Ninth Layer’s expansion gives low-ranking devils new routes to advancement through contracts, elections, energy extraction, and political service. 532 846
• Devil legions later become the central military force in Asmodeus’s war against the Seven Mount Celestia, using discipline, teleportation, magic, and Ninth Layer technology to break celestial defenses. 915 916 969