Doctor Fu Manchu — The Alchemist of Shadows

Fu Manchu
Doctor Fu Manchu — physician, criminal mastermind and master of the hidden network.

Three men have died in London within nine days. None was robbed, none was stabbed, and none had any obvious enemies. Yet each carried an identical scrap of blue paper marked with six Chinese characters and a number.

A physician in Southwark recognises the symptoms of an extraordinarily rare poison. He also recognises the handwriting on the blue paper. Before the adventurers can question him, a sealed packet arrives containing an antidote, a purse of silver and one instruction: ask no more questions.

Doctor Fu Manchu has entered the affairs of England.

Fu Manchu is a physician of exceptional accomplishment, an alchemist whose mastery of poisons and counteragents borders on the supernatural, and an organiser of criminal enterprises whose agents operate across kingdoms and trade routes.

Some serve him willingly. Others serve through financial obligation, blackmail, misplaced loyalty or ignorance of their true employer.

His greatest weapon is not a poison, an enchanted instrument or a concealed blade. It is his ability to persuade other people that cooperation is in their best interests, even when they have begun to suspect otherwise.

In a world where kingdoms feud, merchants trade across dangerous frontiers and scholars guard their discoveries, such a man can wield influence without ruling a single acre of land.

His enemies describe him as a monster. His patients often describe him as the finest physician they have ever encountered. Both may be telling the truth.

At a Glance

  • Name: Doctor Fu Manchu
  • Known as: The Devil Doctor; the Alchemist of Shadows; Master of the Hidden Ledger
  • Ancestry: Human
  • Gender: Male
  • Origin: Ming China
  • Occupation: Physician, alchemist, strategist and criminal organiser
  • Alignment: Lawful Evil
  • Affiliation: The Si-Fan
  • Current location: London, with a network extending along distant trade routes
  • Status: Alive and active
  • Primary ambition: Perfect an elixir of longevity and acquire reliable invisibility
  • Greatest strength: Preparation, intelligence and the loyalty of carefully selected agents
  • Greatest weakness: Intellectual pride and his dependence upon secrecy
  • Campaign role: Mastermind, recurring villain, dangerous patron or reluctant ally
  • Encounter scale: CR 11, particularly dangerous with agents and a prepared laboratory
Si-Fan emblem: a golden serpent coiled around a crimson alchemical flask before a red lotus, within a dark round seal
The Si-Fan — the hidden sign of Fu Manchu’s organisation.

Fu Manchu — Game Statistics

Fu Manchu rarely fights without a prepared escape, trained allies and at least one concealed advantage. His statistics reflect an intelligent alchemist and strategist rather than a conventional warrior.

Select the edition used by your campaign. Each rules section contains its own statistics and abilities.

Doctor Fu Manchu

Medium Humanoid (Human), Lawful Evil

AC 17 (reinforced alchemical coat)
HP 135 (18d8 + 54)
Initiative +4 (14)
Speed 30 ft.

Doctor Fu Manchu ability scores
STR DEX CON INT WIS CHA
9 (−1) 18 (+4) 16 (+3) 22 (+6) 18 (+4) 16 (+3)

Saving Throws Dex +8, Con +7, Int +10, Wis +8
Skills Arcana +14, Deception +11, Insight +8, Investigation +14, Medicine +12, Perception +8, Sleight of Hand +8, Stealth +8
Damage Resistances Poison
Senses Passive Perception 18
Languages Chinese, English and several scholarly and trading languages
Challenge Rating 11 (7,200 XP)
Proficiency Bonus +4

Traits

Antidote Discipline. Fu Manchu has Advantage on saving throws against the Poisoned condition. As an action, while holding his medical kit (10 antidote doses per day), he can administer an antidote to himself or a creature within 5 feet, ending the Poisoned condition on that creature and consuming one dose. This does not restore Hit Points or remove any other condition.

Calculated Defence. Fu Manchu cannot be Surprised by a creature whose presence he has already detected.

Prepared Escape (1/Day). When Fu Manchu has 45 Hit Points or fewer, he can take a Bonus Action to release a smoke charge (a 10-foot-radius Sphere centred on him, Heavily Obscured for 1 minute or until dispersed by strong wind) and move up to half his Speed without provoking Opportunity Attacks. A locked or obstructed exit still prevents passage.

Actions

Multiattack. Fu Manchu makes two attacks using Venom Needle or Alchemical Flask, in any combination.

Venom Needle. Melee or Ranged Attack Roll: +8, reach 5 ft. or range 20/60 ft., one target. Hit: 6 (1d4 + 4) Piercing damage plus 10 (3d6) Poison damage. The target must succeed on a DC 18 Constitution saving throw or have its Speed reduced by 10 feet until the end of its next turn.

Alchemical Flask (6 Available). Ranged Attack Roll: +10, range 30/90 ft., one target. Hit: 18 (4d8) Acid damage. The target must succeed on a DC 18 Constitution saving throw or have the Poisoned condition until the end of its next turn. Each attack consumes one flask.

Paralytic Vapour (Recharge 5–6). Fu Manchu throws a prepared vessel at a point within 60 feet, releasing a cloud in a 15-foot-radius Sphere. Each creature in the Sphere makes a DC 18 Constitution saving throw. On a failure, the creature takes 14 (4d6) Poison damage and has the Restrained condition until the start of Fu Manchu’s next turn. On a success, it takes half damage and is not Restrained. Strong wind disperses the vapour before it takes effect.

Bonus Actions

Master Planner. Fu Manchu chooses one allied agent within 60 feet who can see or hear him. That agent may use its Reaction to move up to half its Speed without provoking Opportunity Attacks or take the Help action.

Reactions

Anticipated Move. Before an attacker Fu Manchu can see rolls an attack against him, he imposes Disadvantage on the roll by shifting position or deploying an obstructing reagent. He must be able to take Reactions.

Legendary Actions

Fu Manchu has 2 Legendary Action Uses. Immediately after another creature’s turn, he can expend one use to take one option. He regains all expended uses at the start of his turn and cannot use them while Incapacitated or unable to act.

  • Reposition: Move up to half his Speed without provoking Opportunity Attacks.
  • Command Agent: One willing allied agent within 60 feet who can see or hear him uses its Reaction to make one weapon attack. He cannot choose this option again until the start of his next turn.

Laboratory Lair Actions

On Initiative count 20 (losing ties), while occupying a prepared laboratory, Fu Manchu may activate one concealed mechanism.

  • Concealing Shutters: A 20-foot-square area becomes Heavily Obscured until the next Initiative count 20.
  • Poison Vent: Creatures in a 10-foot-square area make a DC 18 Constitution saving throw, taking 7 (2d6) Poison damage on a failure or half on a success.
  • Hidden Passage: A concealed door opens, or an unlocked passage seals, until the next Initiative count 20.

The same lair action cannot be used on consecutive rounds. A creature adjacent to an accessible control can use an action and succeed on a DC 16 Dexterity check using Thieves’ Tools to disable the mechanism.

Tactics

Fu Manchu opens by separating opponents with vapour and ordering his agents into favourable positions. He uses his flasks against heavily protected enemies and concentrates on characters capable of interfering with his preparations.

If his laboratory is compromised, he takes his ledger and attempts to escape. His goal is the survival of his research, not personal victory in a fair battle.

Doctor Fu Manchu

Medium humanoid (human), lawful evil

Armour Class 17 (reinforced clothing)
Hit Points 135 (18d8 + 54)
Speed 30 ft.

Doctor Fu Manchu ability scores
STR DEX CON INT WIS CHA
9 (−1) 18 (+4) 16 (+3) 22 (+6) 18 (+4) 16 (+3)

Saving Throws Dex +8, Con +7, Int +10, Wis +8
Skills Arcana +14, Deception +11, Insight +8, Investigation +14, Medicine +12, Perception +8, Sleight of Hand +8, Stealth +8
Damage Resistances Poison
Senses Passive Perception 18
Languages Chinese, English and learned trading languages
Challenge 11 (7,200 XP)

Special Traits

Antidote Discipline. Fu Manchu has advantage on saving throws against poison. He can use an action with his alchemist’s kit (10 antidote doses per day) to end the poisoned condition on himself or another creature within 5 feet, consuming one dose. This restores no hit points and removes no other condition.

Calculated Defence. Fu Manchu cannot be surprised by creatures whose presence he has already detected.

Planned Escape (1/Day). While at 45 hit points or fewer, Fu Manchu may use a bonus action to release smoke (a 10-foot-radius sphere centred on him, heavily obscured for 1 minute or until dispersed by strong wind) and move up to half his speed without provoking opportunity attacks.

Actions

Multiattack. Fu Manchu makes two attacks with Venom Needle or Alchemical Flask.

Venom Needle. Melee or Ranged Weapon Attack: +8 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 6 (1d4 + 4) piercing damage plus 10 (3d6) poison damage. The target must succeed on a DC 18 Constitution saving throw or have its speed reduced by 10 feet until the end of its next turn.

Alchemical Flask (6 Available). Ranged Weapon Attack: +10 to hit, range 30/90 ft., one target. Hit: 18 (4d8) acid damage. The target must succeed on a DC 18 Constitution saving throw or become poisoned until the end of its next turn. Each attack consumes a flask.

Paralytic Vapour (Recharge 5–6). Fu Manchu releases a cloud in a 15-foot-radius sphere centred on a point within 60 feet. Creatures within the area must make a DC 18 Constitution saving throw. On a failure, a creature takes 14 (4d6) poison damage and is restrained until the start of Fu Manchu’s next turn. A successful save halves the damage and prevents restraint. Strong wind disperses the vapour.

Bonus Actions

Master Planner. One allied creature within 60 feet that can see or hear Fu Manchu may use its reaction to move up to half its speed without provoking opportunity attacks, or take the Help action.

Reactions

Anticipated Move. Fu Manchu imposes disadvantage, before the roll, on one attack made against him by an attacker he can see.

Legendary Actions

Fu Manchu has two legendary actions, regaining spent actions at the start of his turn. He takes one option at the end of another creature’s turn.

  • Reposition (Cost 1): Move up to half his speed without provoking opportunity attacks.
  • Command Agent (Cost 2): One allied agent within 60 feet uses its reaction to make one weapon attack.

Lair Actions

On initiative count 20 (losing ties), while inside his prepared laboratory, Fu Manchu activates one device.

  • Shutters: A 20-foot square becomes heavily obscured until the next round.
  • Toxic Vent: Creatures in a 10-foot square take 7 (2d6) poison damage, with a DC 18 Constitution saving throw for half damage.
  • Escape Door: A concealed door opens or an unlocked passage seals until the next round.

The same effect cannot be activated on consecutive rounds. A character beside an accessible mechanism can disable it with an action and a successful DC 16 Dexterity check using Thieves’ Tools.

Combat Behaviour

Fu Manchu targets dangerous investigators rather than the nearest opponent. He allows guards to occupy enemies while he controls the battlefield using vapour, flasks and prepared passages.

If his escape is blocked, he bargains for safe passage and may offer a genuine antidote, valuable information or a concealed rival’s identity.

Doctor Fu Manchu

CR 11 (XP 12,800)
Male human alchemist 12
LE Medium humanoid (human)

Init +8;
Senses Perception +21

Defence

AC 25, touch 17, flat-footed 20 (+5 armour, +4 Dex, +3 natural, +2 deflection, +1 dodge)
hp 102 (12d8 + 48)
Fort +14, Ref +14, Will +8
Defensive Abilities Poison immunity

Offence

Speed 30 ft.
Melee Dagger +8/+3 (1d4−1/19–20)
Ranged Bomb +15 touch (6d6+6 fire or acid, splash 12, 20-ft. range increment)
Special Attacks Bomb 18/day, mutagen, discovery-enhanced bombs

Bomb Save DC: 22
Bombs per Day: 18
Additional Attack Bonus: +1 on appropriate ranged attacks within 30 feet from Point-Blank Shot

Alchemist Extracts

Caster Level 12th
Extracts per day (including Intelligence bonuses) 7/7/5/4

4th Level: greater invisibility (2), freedom of movement (2)

3rd Level: haste (2), displacement (2), protection from energy (1)

2nd Level: invisibility (3), resist energy (2), see invisibility (2)

1st Level: cure light wounds (2), disguise self (2), expeditious retreat (3)

All 23 extracts are prepared as infusions. Drinking one takes a standard action and follows the normal extract and potion rules. The baseline statistics include no active extract or mutagen. Bonus slots are already included; preparations are expended when used.

Statistics

Str 9
Dex 18
Con 18
Int 22
Wis 14
Cha 14

Base Atk +9
CMB +8
CMD 25

Feats: Alertness, Dodge, Improved Initiative, Point-Blank Shot, Precise Shot, Skill Focus (Craft [alchemy]), Weapon Focus (bomb). Brew Potion and Throw Anything are alchemist bonus feats.

Skills: Bluff +14, Craft (alchemy) +27 (+39 when creating alchemical items), Heal +17, Knowledge (arcana) +21, Knowledge (nature) +21, Linguistics +15, Appraise +14, Sleight of Hand +19, Stealth +16, Perception +21, Sense Motive +16, Spellcraft +21

Languages: Chinese, English and several languages acquired through travel and study.

Special Abilities

Bomb (Su). Fu Manchu prepares volatile alchemical bombs dealing 6d6 damage plus his Intelligence modifier. He can prepare acidic or incendiary bombs, and use discovery-based effects to conceal passages or hamper enemies.

Mutagen (Su). Fu Manchu can prepare a mutagen enhancing a selected physical ability score by +4 and providing a +2 natural armour bonus, at the usual associated mental ability penalty. Recalculate his statistics when he drinks it.

Infusion. Selected extracts can be prepared for use by another creature.

Poison Immunity. Fu Manchu is immune to poison, having reached tenth level as an alchemist.

Swift Alchemy. He creates alchemical items in half the normal time.

Discoveries: Acid bomb, infusion, precise bombs, smoke bomb, sticky bomb and tanglefoot bomb.

Combat Tactics

Before Combat: Fu Manchu prepares concealment or defensive extracts, conceals his correspondence and arranges for agents to secure retreat routes.

During Combat: He uses smoke bombs to disrupt spellcasters, tanglefoot effects to obstruct pursuit and acid bombs against heavily protected foes.

Morale: He attempts escape when defeated or when essential experimental materials become endangered.

Equipment

+1 mithral chain shirt, ring of protection +2, amulet of natural armour +3, cloak of resistance +2, dagger, alchemist’s kit, formula book, antidotes, reagents, coded letters and merchant documents.

Bomb limits. Creating and throwing a bomb uses a standard action; he lacks fast bombs. An ordinary bomb directly hits for 6d6+6 fire and splashes for 12 fire within 5 feet; a DC 22 Reflex save halves splash damage. The range increment is 20 feet, maximum 100 feet with normal range penalties. Point-Blank Shot adds +1 attack and direct-hit damage within 30 feet. Acid bomb changes damage to acid and adds 1d6 acid one round later. Precise bombs can exclude up to six squares from splash on a hit. Smoke bomb adds fog cloud concealment out to a 10-foot radius for 12 rounds. Sticky bomb makes the direct target take splash damage one round later. Only one discovery marked with an asterisk can modify the same bomb.

Tanglefoot bomb. In addition to the bomb’s ordinary damage, the direct target makes a DC 22 Reflex save; on a failure it is entangled and glued to the floor. Creatures in the 5-foot splash area who fail that save are entangled without being glued; success avoids entanglement. The adhesive lasts 2d4 rounds and follows tanglefoot bag limits: Huge or larger creatures are unaffected and it does not work underwater. A flying direct target whose wings are glued falls. A glued creature can break free with a DC 17 Strength check or by dealing 15 damage to the adhesive with a slashing weapon. A slashing attack against the adhesive hits automatically; roll its damage normally. Once freed, a creature remains entangled until the adhesive expires or is removed. An entangled spellcaster must pass a concentration check with DC 15 + the spell’s level to cast. Universal solvent removes the adhesive.

Poison use and swift poisoning. Fu Manchu does not risk poisoning himself when applying poison. Applying a carried poison to a weapon takes a swift action. The attack routine uses ordinary bombs and an unpoisoned dagger; unlisted poisons are not added to their damage.

Mutagen. The prepared dose enhances Dexterity: drinking it takes a standard action and grants +4 Dexterity, +2 natural armour and −2 Wisdom for 120 minutes. With the dose active: Dex 22, Wis 12, AC 29/touch 19/flat-footed 22, initiative +10, Ref +16, Will +7, bomb attack +17 and CMD 27. Dexterity skills rise by 2; Wisdom skills fall by 1. One dose can be maintained at a time; brewing it takes 1 hour.

Skill allocation. 132 ranks: 12 each in Bluff, Craft (alchemy), Heal, Knowledge (arcana), Knowledge (nature), Perception, Spellcraft, Sleight of Hand and Stealth; Linguistics 9, Sense Motive 10, Appraise 5. Alertness supplies +4 to Perception and Sense Motive; Skill Focus supplies +6 to Craft (alchemy). The alchemist’s kit supplies components and grants no Craft bonus; alchemy adds +12 when creating an alchemical item.

Doctor Fu Manchu — CR 11

Size/Type: Medium Humanoid (Human); rogue 11
Hit Dice: 11d6 + 33 (71 hp)
Initiative: +8
Speed: 30 ft. (6 squares)
Armour Class: 22 (+5 armour, +4 Dex, +2 deflection, +1 natural), touch 16, flat-footed 22 while uncanny dodge applies
Base Attack/Grapple: +8/+8
Attack: +1 dagger +13 melee (1d4+1/19–20) or alchemical vial +12 ranged touch (3d6 acid)
Full Attack: +1 dagger +13/+8 melee (1d4+1/19–20)
Space/Reach: 5 ft./5 ft.
Special Attacks: sneak attack +6d6, prepared vapour, master planner
Special Qualities: evasion, trapfinding, trap sense +3, uncanny dodge, improved uncanny dodge, skill mastery
Saves: Fort +6, Ref +11, Will +6
Abilities: Str 10, Dex 18, Con 16, Int 22, Wis 16, Cha 14
Skills: Bluff +16, Craft (alchemy) +23, Decipher Script +20, Diplomacy +20, Disable Device +18, Heal +10, Hide +18, Knowledge (local) +20, Listen +17, Move Silently +18, Search +20, Sense Motive +17, Sleight of Hand +20, Spot +17, Use Magic Device +16 (+18 with scrolls), Use Rope +6
Feats: Combat Expertise, Improved Initiative, Point Blank Shot, Skill Focus (Craft [alchemy]), Weapon Finesse
Environment: cities and prepared laboratories
Organisation: solitary or with Si-Fan agents
Challenge Rating: 11
Treasure: +1 dagger, reinforced coat (+5 armour bonus), ring of protection +2, amulet of natural armour +1, six custom acid vials, two vapour flasks, antidotes, coded documents and concealed funds
Alignment: lawful evil
Advancement: by character class
Level Adjustment: —

Languages: Chinese, English and learned scholarly languages.

Special Abilities

Prepared Vapour (Ex; 2/Day). Fu Manchu throws a flask into a 10-foot-radius spread within 30 feet. Creatures in the area must succeed on a DC 19 Fortitude saving throw or become sickened for 1d4 rounds. Strong wind disperses the vapour. A creature wearing suitable respiratory protection gains a +4 circumstance bonus on the saving throw. This is a custom alchemical preparation.

Master Planner (Ex). Once per round, Fu Manchu can use a standard action to direct a trained agent within 60 feet who can hear him. The willing agent immediately takes one extra move action, provoking attacks of opportunity normally. Each agent can benefit only once per encounter.

Skill Mastery (Ex). Fu Manchu has selected Bluff, Craft (alchemy), Decipher Script, Diplomacy, Disable Device, Hide, Listen, Search and Sense Motive as his rogue special-ability skills. He can take 10 on these checks even while distracted or threatened.

Improved Uncanny Dodge (Ex). Fu Manchu cannot normally be flanked except by a rogue with sufficient additional rogue levels under the normal rules.

Sneak Attack (Ex). He deals an additional 6d6 precision damage when the standard conditions for sneak attack apply.

Combat Tactics

Before Combat: Fu Manchu conceals important documents, prepares flasks and directs his agents to control the exits.

During Combat: He uses thrown alchemical preparations, concealment, positioning and allies. He employs sneak attack only when a favourable opportunity arises.

Morale: He withdraws when the research is safe or further combat offers little advantage.

Equipment

+1 dagger, reinforced coat granting the listed +5 armour bonus, ring of protection +2, amulet of natural armour +1, travelling alchemical equipment, poison vials, antidotes, coded documents and concealed funds.

Skill allocation. 210 skill points: 14 ranks in each of the fourteen principal skills except Disable Device (12 ranks); Heal has 7 cross-class ranks costing 14 points, and Use Rope has 2 ranks. Diplomacy includes +2 each from Bluff and Sense Motive; Sleight of Hand includes +2 from Bluff. Decipher Script gives +2 to Use Magic Device with scrolls. Skill mastery selects nine skills (3 + the Intelligence modifier). Use Magic Device remains outside that selection and requires a roll; he cannot take 10 with it.

Vial limits. The custom acid preparation uses a standard action, a 10-foot range increment and normal thrown-weapon range penalties to a maximum of 50 feet. A hit deals 3d6 acid, with no splash. Point Blank Shot adds +1 attack and damage within 30 feet. Six vials are available, one consumed per throw. Ranged sneak attack is limited to 30 feet and never applies to an area vapour. The fixed DC 19 vapour lasts 1d4 rounds; respiratory protection gives +4 on its Fortitude save and strong wind prevents the cloud from forming. Its formula and the reinforced coat are unique preparations without a standard market price.

What Is Fu Manchu Doing Right Now?

Fu Manchu is searching for a collection of alchemical manuscripts known as The Glass Without a Shadow. The work describes methods for stabilising preparations that alter the passage of light through living bodies.

He believes the missing formula may help explain the invisibility experiments of Doctor Hawley Griffin.

Yet invisibility is not his ultimate goal.

For many years, he has experimented with an elixir capable of slowing the deterioration of the body. His current preparation sometimes produces startling improvements in vigour, but repeated treatments are dangerous and the ingredients deteriorate rapidly.

He believes that the missing manuscript contains a method of preserving the unstable components.

Several London merchants have already sold him valuable books and instruments. Others have discovered that refusing his offers can produce unfortunate consequences.

Fu Manchu has established a temporary headquarters behind a legitimate physician’s practice near the southern approaches to London Bridge.

From there, his agents watch the river, intercept correspondence and investigate the whereabouts of Griffin’s research.

His Immediate Objectives

  • Find the remaining fragments of The Glass Without a Shadow.
  • Identify scholars capable of translating difficult alchemical passages.
  • Acquire samples associated with Griffin’s invisibility experiments.
  • Protect his own longevity formula from competing investigators.
  • Discover which members of his organisation have been communicating with Moriarty.
  • Maintain the appearance of a respectable medical practice.

His Current Difficulty

His greatest weakness is distance. Letters from Asia can take months to reach Europe, and instructions passed through unfamiliar ports can be misunderstood, altered or stolen.

His London network is therefore more independent than he would prefer. Several ambitious lieutenants have begun making arrangements without his permission.

One has secretly opened negotiations with a rival criminal organisation.

The Si-Fan — His Hidden Organisation

The Si-Fan is a clandestine organisation built around Fu Manchu’s interests, not a nation or ethnic community. It consists of physicians, scholars, mercenaries, informants, forgers and trusted criminals linked through intermediaries.

Most members know only a small part of the organisation. A courier may believe he serves a merchant. The merchant may believe his employer is a noble patron. Only the inner circle understands the purpose behind the transactions.

Structure of the Si-Fan

  • Inner Circle: The handful of associates who know Fu Manchu personally.
  • Financial Agents: Moneylenders, merchants and brokers who move wealth between regions.
  • Medical Associates: Physicians, herbalists and apothecaries supplying medicines and alchemical materials.
  • Couriers: Travellers carrying encoded correspondence or packages.
  • Informants: Clerks, servants and scholars paid for useful knowledge.
  • Enforcers: Criminals employed to intimidate, capture or eliminate selected targets.

Some agents are genuinely loyal. Others serve for money, under duress or without understanding the true purpose of their work.

The organisation can be defeated through its dependence on secrecy. A captured ledger, intercepted shipment or disloyal intermediary can expose entire sections of the network.

Encountering Doctor Fu Manchu

1. The Physician’s House

An unobtrusive house behind a respectable street serves as his London headquarters. The front rooms contain clean bedding, medicines and well-maintained surgical instruments.

Patients come and go, and many have genuinely benefited from the doctor’s expertise.

The rear chambers contain laboratories, concealed cabinets and locked doors leading to an enclosed courtyard.

Beneath the building lies a ventilation system that can distribute vapour through selected passages.

2. The London Docks

Cargo arrives under legitimate merchant marks. Most shipments contain ordinary medicines, preserved plants, paper, textiles and instruments.

A small proportion conceals rare reagents, coded messages and items stolen from distant scholars.

Adventurers investigating the shipments may discover that several completely unrelated merchants are using the same bookkeeper.

3. The Noble Household

Fu Manchu may appear as a visiting physician retained to treat a seriously ill noble.

His patient improves dramatically.

The household consequently regards the doctor as a benefactor and refuses to believe accusations against him.

The noble’s recovery is genuine, but the treatment has created a dependency that Fu Manchu intends to exploit.

4. The Private Invitation

The adventurers receive a formal invitation to supper.

Their host offers fine food, knowledgeable conversation and an apparently generous commission.

Before negotiations begin, he quietly mentions information about the party that no stranger should possess.

He wishes to establish whether the adventurers can be purchased, persuaded or must eventually be removed.

How Fu Manchu Fights

Fu Manchu never willingly enters a battle on equal terms. He prefers familiar terrain, controlled entrances, prepared compounds and agents whose movements he has already rehearsed.

His preferred opening is to separate the adventurers rather than inflict immediate casualties.

Typical Encounter Sequence

  1. First Round: Release concealment or paralytic vapour. Order agents to secure the exits.
  2. Second Round: Identify the most dangerous opponent and prevent them from reaching him.
  3. Third Round: Use specialised attacks while relocating towards a prepared escape.
  4. If Defeated: Preserve important manuscripts, abandon expendable equipment and withdraw.

How Adventurers Can Defeat Him

  • Control the Air: Ventilation, open windows and strong wind defeat several chemical preparations.
  • Disable the Laboratory: Valves, shutters and doors can be sabotaged or blocked.
  • Capture the Ledger: His records reveal intermediaries, payments and planned operations.
  • Question His Agents: Many are not sufficiently informed to protect the whole organisation.
  • Exploit His Pride: A sufficiently difficult intellectual challenge may distract him from more practical dangers.
  • Offer a Bargain: He values survival, knowledge and the continuity of his research.

Appearance, Personality and Manner

Fu Manchu is a mature man of composed expression and deliberate movements. His clothing reflects both scholarly accomplishment and considerable wealth.

His dark hair is carefully arranged, and his moustache and beard are neatly maintained. He favours fine embroidered garments when entertaining visitors, exchanging them for practical protective clothing during laboratory work.

He rarely raises his voice. Anger is usually expressed through silence, the withdrawal of a favour or the careful selection of a punishment.

He enjoys complicated problems and respects genuine intellectual achievement.

He dislikes waste, crude cruelty without purpose and the destruction of useful knowledge.

These preferences do not make him merciful. He can treat a patient with sincere care in the morning and order another person murdered that evening.

Personality Traits

  • He remembers personal details from conversations held years earlier.
  • He prefers making offers to issuing threats.
  • He listens closely to anyone who demonstrates unusual expertise.
  • He dislikes being interrupted during experiments.
  • He is patient enough to allow enemies to believe they are winning.

Ideal

Knowledge is power, and power should belong to those capable of understanding its consequences.

Bond

His accumulated research and the small number of people he considers indispensable.

Flaw

He cannot easily accept that some discoveries should remain unexplored.

Private truth. Fu Manchu’s own longevity treatment is becoming less reliable. He hides the failing batches from his inner circle because admitting that the formula might never work would threaten both his authority and the bargain on which his life’s work rests.

Relationships and Influence

Professor James Moriarty

Professor James Moriarty possesses a similarly formidable talent for criminal organisation.

Both men understand the usefulness of cooperation. Neither trusts the other.

Their rivalry may involve intercepted letters, competing agents, financial manipulation and attempts to discover each other’s hidden resources.

Doctor Hawley Griffin

Doctor Hawley Griffin represents an extraordinary opportunity.

Fu Manchu wishes to acquire the principles behind Griffin’s invisibility experiments without trusting their unpredictable inventor.

Griffin would regard any attempt to appropriate his discoveries as intolerable theft.

Fah Lo Suee

Fu Manchu’s daughter is an intelligent and ambitious figure with independent interests.

She understands enough of the Si-Fan’s operations to become a dangerous rival.

She may attempt to take control of selected agents, protect associates endangered by her father or bargain with the adventurers for information.

Her loyalty is never guaranteed.

London Physicians and Alchemists

Several local scholars regard Fu Manchu as a brilliant colleague whose unusual methods have achieved astonishing results.

Others suspect the origins of his treatments but lack the evidence to expose him.

His professional reputation provides a valuable shield against investigation.

Independent Merchants

Merchants operating across distant routes may carry his correspondence without knowing the identity of the sender.

Their participation should not automatically be treated as criminal. Many are merely conducting ordinary commerce.

Equipment, Treasures and Possessions

  • Portable Alchemical Laboratory: Balances, burners, glass vessels, sealed reagents and measuring instruments.
  • Medical Instruments: Fine surgical tools, needles, bandages and diagnostic equipment.
  • Rare Antitoxins: Preparations effective against several unusual poisons.
  • Poison Collection: A carefully documented assortment of toxins and experimental compounds.
  • The Hidden Ledger: Encoded records identifying payments, deliveries and associates.
  • Merchant Correspondence: Letters, bills of exchange and documents connecting distant ports.
  • Incomplete Invisibility Formula: Fragments of research associated with Griffin.
  • Experimental Longevity Elixir: A dangerously unstable preparation that temporarily improves physical vigour.
  • Emergency Supplies: Concealed money, clothing, forged documents and escape provisions.

Treasure and Reward

Characters who defeat Fu Manchu may recover valuable alchemical supplies, a selection of genuine antidotes, substantial correspondence and information concerning other criminal organisations.

The greatest reward may be knowledge rather than wealth.

His ledger can reveal hidden alliances, compromised officials and previously unknown laboratories.

Fu Manchu Adventure Hooks

1. The Missing Manuscript

An elderly scholar disappears after purchasing an incomplete medical manuscript.

His family employs the adventurers to find him.

Fu Manchu offers an enormous sum for the document, but the scholar has discovered information that makes him unwilling to surrender it.

2. The Antidote First

A respected noble develops symptoms no physician can explain.

Fu Manchu provides an effective antidote and demands only one favour in return: the recovery of a locked chest from a guarded residence.

The cure is genuine. The contents of the chest are essential to an experiment the doctor wishes to conceal.

3. The Innocent Courier

A young messenger is arrested carrying correspondence connected to several suspicious deaths.

He genuinely believes he has been transporting ordinary merchant documents.

Investigating the sender reveals several layers of the Si-Fan.

4. Moriarty’s Equation

Fu Manchu and Moriarty are competing for possession of the same valuable manuscript.

Their rivalry threatens several innocent London households.

The adventurers must decide whether to undermine both men or temporarily cooperate with one to stop the other.

5. The Scholar’s Invitation

Fu Manchu invites an academically inclined adventurer to witness an extraordinary alchemical demonstration.

He offers rare knowledge in exchange for assistance with a difficult experiment.

The demonstration succeeds, but its true purpose becomes apparent only afterwards.

6. The Invisible Patient

A hospital receives a patient whose body is invisible, although his breathing, heartbeat and voice remain perfectly normal.

Fu Manchu sends agents to obtain the patient’s medical records.

Griffin claims the patient stole the formula that caused his transformation.

7. The Hidden Ledger

A bookkeeper offers to sell the adventurers a collection of encoded accounts.

Shortly afterwards, the bookkeeper is murdered and the documents disappear.

The accounts identify several respectable people who have unknowingly financed Fu Manchu’s operations.

8. The Price of Longevity

An elderly noble suddenly appears twenty years younger.

The transformation begins to fade, and each further treatment becomes increasingly dangerous.

Fu Manchu knows how to stabilise the process but demands something the noble can obtain only through the adventurers.

Using Fu Manchu at the Table

Fu Manchu should seldom begin an encounter by attacking.

He first identifies what the adventurers want and offers something capable of advancing their ambitions.

He may possess a genuine cure, information about an enemy, access to forbidden scholarship or the ability to protect someone the characters cannot otherwise save.

The immediate bargain is often fair. The consequences are not.

As an Enemy

The party uncovers his experiments, rescues a prisoner or interrupts a criminal operation. Fu Manchu responds through influence, bribery and carefully organised retaliation.

As a Patron

He employs the party to acquire rare manuscripts, escort valuable equipment or investigate a rival. His payment is generous, but the task conceals a larger purpose.

As a Necessary Ally

Fu Manchu possesses knowledge that could save innocent lives. The adventurers may find themselves cooperating with a dangerous man because refusing his help would produce an even worse outcome.

Defeating His Organisation

His network is formidable but not invulnerable.

Agents can be persuaded to defect. Ledgers can be decoded. Safe houses can be exposed. Laboratories can be destroyed or confiscated.

The doctor can survive the loss of a single servant or shipment. He cannot easily survive the simultaneous collapse of his finances, communications and trusted inner circle.

Consequences of Victory or Defeat

If Fu Manchu escapes, he does not necessarily seek immediate revenge. He studies the adventurers, identifies their weaknesses and waits for another opportunity.

If captured, he attempts negotiation. His knowledge may prove valuable to powerful people, and some officials may be reluctant to expose their former association with him.

If killed, the Si-Fan fragments into competing groups.

Some agents abandon criminal activity. Others attempt to claim his manuscripts, wealth and remaining laboratories.

A careless successor might prove more violent than Fu Manchu himself.

If the adventurers expose the whole organisation, they may also discover that innocent patients and legitimate institutions depended upon its medicines and funding.

Ending his crimes does not automatically repair every consequence of his influence.

Connected Places and People

Sources and Adaptation

Fu Manchu is a fictional character created by Sax Rohmer, first appearing in stories published in 1912 and collected in The Mystery of Dr. Fu-Manchu in 1913.

Fu Manchu is alive in 1454, with a lifetime native to this age. His scholarship, mastery of poisons, criminal network and pursuit of longevity remain central to his identity. Griffin and Moriarty likewise belong naturally to the present chronicle. His crimes arise from his choices and ambitions; racial stereotypes from the original pulp fiction are not retained.

His villainy arises from his decisions, ambitions and methods, not his nationality, ethnicity or cultural traditions.

The four game-edition stat blocks are original, unofficial campaign adaptations. Custom abilities, alchemical compounds and encounter features are not official published rules and require ordinary game-master review before use.

Further Reading

Rules references: D&D 2024 monster statistics; Pathfinder alchemist; alchemist discoveries; D&D 3.5 rogue.

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