The Spice Index

Kwisatz Haderach, Fremen messiah, Emperor Muad'Dib

Duke of Caladan, Paul's father

Leto's concubine, Paul's mother, Fremen Reverend Mother

Regent of the Imperium, pre-born Reverend Mother

God-Emperor, architect of the Golden Path

Leto II's twin, historian-preserver

Paul's Fremen concubine, mother of the twins

Naib of Sietch Tabr, Fremen leader

Duke of Caladan, Leto's father

Weapons master, troubadour, Earl of Caladan

Swordmaster, serial ghola, final Kwisatz Haderach

Mentat Master of Assassins

Suk doctor, traitor

Head of House Harkonnen, governor of Arrakis

Baron's nephew and heir

Harkonnen Mentat assassin

Harkonnen governor of Arrakis

Governor of Lankiveil, Baron's half-brother

Padishah Emperor

Paul's political wife, court historian

Emperor's Truthsayer, breeding mistress

Imperial agent, Shaddam's cousin and handler

Missionaria Protectiva agent, Fenring's wife

Imperial Planetologist, Fremen leader

First Imperial Planetologist of Arrakis

Corrino heir, scribe-historian

Farad'n's mother, regent of the exiled Corrinos

Face Dancer, last Tleilaxu Master

Tleilaxu dwarf, human distrans

conspirator against Muad'Dib

Ixian Ambassador, Leto II's bride

Leto II's majordomo, Siona's father

First of the prescience-invisible breed

Fish Speaker lieutenant

Former Ixian Ambassador, Hwi's uncle

Mentat Bashar, military commander

Reverend Mother, Mother Superior

Mother Superior

Worm-commander, Reverend Mother, exile leader

Imprinter

Former Matre, Mother Superior, Great Honored Matre

Mentat councillor, archivist

Tleilaxu Master of Masters

Great Honored Matre

Leader of the hidden Jews

Wild Reverend Mother, memory-keeper

Independent Face Dancers / Enemy

Jihad hero, longest-lived Atreides

Butlerian leader

Manford's Swordmaster and bearer

Directeur of Venport Holdings

First Navigator, founder of the Guild, Oracle of Time

First Reverend Mother, founder of the Sisterhood

Reverend Mother, Mother Superior, Harkonnen restorer

Valya's sister, assassin

Raquella's granddaughter, Butlerian sympathizer

Padishah Emperor

Padishah Emperor

Founder and Headmaster of the Mentat School

Independent robot, Enemy architect

Thinking-machine evermind, Outside Enemy

Mentat, Imperial Overseer of Spice

Exiled heir of Ix, cyborg prince

Shaddam's wife, Kwisatz Mother

Face Dancer leader, Enemy agent

Enemy's controllable Kwisatz Haderach

Heretical pamphleteer, historian

Child-assassin

Tleilaxu Master Researcher

Honorable noble house whose sea-faring Caladan legacy and paternal code of loyalty become the breeding line of Paul, the God Emperor, and the Kwisatz Haderach.

Industrial, slaving Great House of Giedi Prime, the Atreides' hereditary enemy and the Baron's instrument of cruel resource extraction.

The Imperial dynasty ruling from Kaitain through Sardaukar force, holder of the Golden Lion Throne, whose Shaddam IV conspires against the Atreides.

Technocratic rulers of the subterranean machine-cities of Ix, whose innovations in harvesters, no-ships, and navigation machines thread the entire saga.

Ecazi noble house allied to the Atreides through Leto's political marriage to Ilesa, opposed to House Moritani of Grumman.

Technological House whose moon Korona is atomized in Shaddam's "Great Spice War" as a demonstration of Imperial force.

Female order pursuing the Kwisatz Haderach through a millennia-long breeding program, prana-bindu discipline, the Agony, and political manipulation.

Murbella's forced fusion of Bene Gesserit and Honored Matres into a single military order to face the Outside Enemy.

Secretive, theocratic genetic engineers who create gholas, Face Dancers, axlotl tanks, and synthetic spice, hidden behind a Zensunni/Sufi faith.

Navigators and Heighliner operators who hold the monopoly on foldspace travel, dependent on melange for prescient navigation.

Train human computers to replace thinking machines after the Butlerian Jihad, serving Great Houses as logicians and strategists.

Train physicians bound by Imperial Conditioning, a diamond-tattooed oath meant to guarantee loyalty and prevent betrayal.

Train elite warriors through brutal trials such as the "Corridor of Death" against combat meks, supplying swordmasters to Great Houses.

Desert people of Arrakis, stewards of water and the sandworm cult, whose guerrilla strength topples the Imperium and whose ecological dream greens the planet.

The Emperor's fanatical soldier-legions, forged on the prison-planet Salusa Secundus, the Corrino throne's iron fist.

Leto II's all-female army and religious order, bound by the Siaynoq ritual, enforcing Leto's Peace across 3,500 years.

Predatory female order descended from Fish Speakers and lost Reverend Mothers, wielding weaponized sexual imprinting and Obliterator weapons.

Builders of forbidden-but-tolerated advanced technology: harvesters, no-ships, navigation machines, the dictatel, and Hwi Noree.

The Imperium's commercial combine holding the economic levers — including spice shares — over which Great Houses and the throne vie.

Assembly of the Great Houses, the only political body able to check the Emperor, governing through the Great Convention and Trial by Forfeiture.

Priestly bureaucracy that deifies Muad'Dib and polices the theocratic Imperium, becoming a power unto itself.

Bene Gesserit arm that plants prophetic beliefs across worlds, engineering savior myths (such as the Lisan al-Gaib) to exploit in crisis.

Paul's Fremen death commandos, the vanguard of the jihad.

Fanatical antitechnology crusade descended from Rayna Butler's Cult of Serena, enforcing the "mind of man is holy" creed across the Imperium.

Josef Venport's commercial empire, operating the foldspace fleet and Navigator program, waging economic war on the Butlerians.

Omnius's machine empire, rebuilt in the deep Scattering, returning at Kralizec to sterilize humanity and reclaim the universe.

Tleilaxu shape-shifters who copy any person's body and memories, used as infiltrators and assassins across millennia.

Secret remnant of the ancient Jewish people, keepers of a Bene Gesserit pact, wandering the Imperium in search of a planetary "Israel."

Religion venerating Leto II through the "pearls of awareness" carried in the sandworms of Rakis, governed by a priesthood around Sheeana.

An addictive, cinnamon-smelling narcotic produced only by Arrakis's sandworm lifecycle; extends life, sharpens awareness, and unlocks prescience in some minds.

Colossal desert creatures of Arrakis whose life-cycle produces melange; sacred to the Fremen as the avatar of God.

Small leathery creatures, the larval stage of the sandworm, that encyst water and link together into the proto-worm.

A violent eruption of pressurised melange from deep in the Arrakis sand, marking a mature spice deposit.

A small, immature sandworm used by Fremen to produce the Water of Life by drowning.

A deadly poison from a drowned sandworm, transformed by a Reverend Mother into an awakening drug that unlocks ancestral memory.

A body-covering suit that recycles sweat and urine into drinkable water, enabling survival in the open desert of Arrakis.

The sacred Fremen blade ground from a sandworm tooth; once drawn it must draw blood.

The poisoned needle held to the neck during the Bene Gesserit humanity test; "it kills only animals."

A Bene Gesserit recitation used to focus the mind and master fear; begins "I must not fear."

The Bene Gesserit's core nerve-and-muscle control discipline, pairing breath (prana) with body linkage (bindu).

A Bene Gesserit vocal technique that overrides a listener's nervous system to compel obedience.

The Bene Gesserit ability to access the memories and personas of female ancestors (and, for a Kwisatz Haderach, male ancestors too).

The male super-being the Bene Gesserit bred for millennia, who can access male and female ancestral memory and see where the Sisterhood cannot.

The ability to see possible futures, awakened and amplified by melange and the Water of Life.

An Ixian vessel or installation shielded from prescience and ordinary sensors, invisible even to Kwisatz Haderach-level sight.

A clone of a dead person, grown by the Tleilaxu from preserved cells and restored to original memory through trauma or awakening.

A Tleilaxu bioreactor—originally a living woman's body—used to grow gholas and, in the Prelude books, synthetic spice.

A Tleilaxu shape-shifter able to mimic any person's appearance and, in later forms, their memories and identity.

A human trained to perform the calculations and logic of a computer, after the Butlerian Jihad banned thinking machines.

A female order using prana-bindu, the Voice, Other Memory, and a millennia-long breeding program to steer humanity's evolution.

The Bene Gesserit's office for planting tailored prophecies on backward worlds, so any Sister can later exploit the local messiah legend.

A directed-energy laser weapon; its beam interacting with a Holtzman shield causes a catastrophic pseudo-atomic explosion.

A personal or fortification force-field that stops fast-moving projectiles but permits slow objects to pass.

A small remote-controlled flying needle-blade guided by a nearby operator to assassinate a target.

A large winged vessel that lifts spice harvesters off the sand when a worm approaches.

A flapping-wing aircraft used for transport, scouting, and combat across the Imperium, especially on Arrakis.

The atmospheric form of melange that saturated Arrakis's deserts and, in concentration, induces visions.

Leto II's millennia-spanning plan to save humanity from predictable extinction by enforcing a stagnant peace, then triggering a Scattering beyond oracular reach.

The vast human diaspora after Leto II's death, when famine drove billions beyond the known Imperium into uncharted space.

A Fremen who has mastered the art of calling and riding a sandworm using maker hooks.

A Fremen desert community, living in rock-cavern settlements led by a naib.

A small desert mouse of Arrakis, "muad'dib" in the Fremen tongue, adopted by Paul as his Fremen name.

The Fremen code that treats water as communal property, reclaiming all moisture from the living and the dead.

A weapon that renders a target unconscious without killing, useful for taking prisoners or capture operations.

The "voice from the outer world," the off-world messiah whose coming the Missionaria Protectiva planted in Fremen prophecy.

Paul's private Fremen name, meaning "the strength of the base of the pillar," given by Stilgar at Sietch Tabr.

Paul's public Fremen name, taken from the desert mouse (tabaq), under which he leads the jihad and rules as Emperor.

Paul's elite Fremen death commandos, the vanguard of the jihad.

The leader of a Fremen sietch; a naib may be challenged in ritual combat for the position.

The Fremen ritual challenge to the death, by which a naib's leadership or a personal honour is settled.

The formal code of vendetta between Great Houses, permitting limited warfare under the Great Convention.

The Padishah Emperor's elite fanatical soldier-fanatics, bred on the hell-world of Salusa Secundus.

The monopoly organisation of Navigators who use prescience and melange to fold space and travel between stars.

The mutated, spice-saturated Steersmen of the Spacing Guild who pilot foldspace ships through prescient sight.

The Imperium's central commercial combine, holding shares in all major enterprises including the spice trade.

The assembly of the Great Houses of the Imperium, the nominal check on the Emperor's power.

The body of Imperium-wide laws governing warfare, prohibiting atomics against humans and restricting certain weapons.

Nuclear weapons retained by each Great House under the Great Convention, reserved for deterrence and use against non-human targets.

The medical school that conditions its doctors to be incapable of harm, marked by a diamond forehead tattoo.

The priestly bureaucracy that deified Muad'Dib and turned his cult into an Imperial religion.

Leto II's all-female army and religious order, founded to enforce Leto's Peace through a feminine military ethos.

The ritual ceremony that binds Fish Speakers to the God Emperor in ecstatic fealty.

A predatory female order returning from the Scattering, combining Bene Gesserit-style discipline with weaponised sexual imprinting.

A theocratic genetic-engineering society, suppliers of gholas, Face Dancers, and synthetic spice.

A child awakened to ancestral memory in the womb by its mother's spice agony, before forming its own personality.

The Bene Gesserit's name for a pre-born who has been possessed by one of their inner ancestral personas.

An atomic-era weapon whose J-rays blind everyone within range; used to blind Paul in Dune Messiah.

A living carrier (animal or human) with a recorded message encoded in its nervous system, released to deliver it.

A divinatory deck spreading among Fremen in Dune Messiah that erodes Paul's monopoly on prescience.

Syncretic philosophical schools blending Zen and Sunni/Sufi traditions, central to Fremen and Tleilaxu worldviews.

Anti-gravity devices derived from Holtzman physics, used to buoy heavy objects and the Baron Harkonnen's body.

A fragment of Leto II's consciousness carried in each sandworm after his death, the seed of the Church of the Divided God.

Rule by monopoly control of an indispensable resource, as Leto II controls spice or historical empires controlled water.

The Bene Gesserit and Honored Matre discipline of binding a subject to absolute obedience through controlled sexual ecstasy.

A drug that protects a person's memories from Ixian probe interrogation.

A torture/interrogation device that reads a victim's memories directly from the nervous system.

The genetic trait bred by Leto II that makes its carriers and their descendants invisible to oracular sight.

A Tleilaxu synthetic melange substitute, secretly funded by Shaddam IV to break the Arrakis spice monopoly.

A human brain installed in a mechanical walker body; the Titans and their successors used these forms during and after the Butlerian Jihad.

A shape-shifting machine material inherited from Omnius's empire, used to build the sentient city of Synchrony.

The thinking-machine evermind, believed destroyed at the Battle of Corrin but rebuilt in the deep Scattering as the "Outside Enemy."

The last independent robot, a thinking-machine philosopher who mentored Gilbertus Albans and designed the Face Dancer fail-safe.

The bodiless, fifteen-thousand-year-old prescient founder of the Spacing Guild, worshipped by Navigators as a deity.

The prophesied end-of-universe war between humanity and the Outside Enemy, reframed in Sandworms as a "phase change" presided over by the Kwisatz Haderach.

A super-concentrated melange variant produced by water-tolerant "seaworms" bred in Buzzell's oceans by the ghola Waff.

A Tleilaxu storage device that preserves living cells indefinitely, carried by the last Master Scytale.

Devastating planet-sterilising weapons stolen from Omnius by the rebel Honored Matres and used to destroy Rakis and Richese.

The crusade that destroyed all thinking machines and imposed the commandment "the mind of man is holy" across the Imperium.

The indigenous desert people of Arrakis, hidden in sietches, water-disciplined, and fanatical in their worship of Shai-Hulud.

A Fremen device that reclaims the water from a dead body for the tribe's communal store.

A precious gem harvested from the oceans of Buzzell, the source of one of the Imperium's luxury trades.

The strategic fulcrum of the entire Imperium. Arrakis is the stage for Paul's rise, the jihad, Leto II's greening and God-Emperor reign, and the Church of the Divided God after his death. Renamed Rakis in Heretics, it is sterilised by the Honored Matres, ending the original spice cycle.

Caladan is the Atreides homeland Paul leaves for Arrakis, the place of his childhood and Jessica's exile. Under the Qizarate it is briefly renamed "Chisra Sala Muad'Dib." It remains the emotional pole of the saga and the site of the Harkonnen-ghola plot in Hunters.

Giedi Prime is the Harkonnen seat—the slave city of Barony, the sadistic hunts, the no-ship raid on Wallach IX. Renamed Gammu after the God Emperor, it houses the Bene Gesserit Keep where the twelfth Duncan ghola is raised, and the lost Harkonnen no-globe Teg uses. The Valkyrie forces later crush a rebel stronghold there.

Kaitain is the Imperial capital under Elrood IX and Shaddam IV, the site of the Golden Lion Throne and the Landsraad's formal business. Shaddam's "Great Spice War" strikes planets from here; Dominic Vernius's atomic strike on Kaitain is thwarted. After Paul's ascension the capital moves to Arrakis.

Salusa is the Emperor's training ground and dumping ground; Shaddam IV is exiled here after his abdication. The Prelude and Great Schools books show it as the early Corrino capital before Kaitain and as the site of the Sisterhood schism under Dorotea. The planet's brutality is the open secret of Corrino power.

Wallach IX is the Sisterhood's central school and the seat of its breeding program, later rebuilt by Raquella after the Rossak diaspora. It is where Jessica is summoned and offered the Mother Superior's seat, and where Tessia is rescued by Bronso in Winds of Dune. **(Brian Herbert/KJA for founding)**

Ix is the home of House Vernius and the source of no-ships, navigation machines, carryalls, and the Ixian probe. Its ambiguous relationship with the Butlerian proscription against thinking machines is a recurring theme. The Tleilaxu-Harkonnen invasion of Ix is a major Prelude plotline; Rhombur is restored to the Grand Palais.

Tleilax is the centre of ghola, Face Dancer, and axlotl-tank production. Waff rules from Bandalong; the Bene Gesserit alliance with him is negotiated there. Murbella's Valkyrie forces crush the rebel Honored Matre stronghold of Bandalong in Hunters.

Chapterhouse is the Bene Gesserit's rump capital after the fall of Wallach IX and the destruction of Rakis. Odrade's terraforming project transplants the last giant sandworm's sandtrout to start a new spice cycle. Murbella forges the New Sisterhood here, and the escaping faction steals the no-ship *Ithaca* from its landing flat.

Corrin is the historical anchor of the entire Imperium: the place where Omnius was supposedly destroyed, lending "Corrino" to the Imperial House. Vorian Atreides lures the Harkonnens there to end their blood feud in Navigators of Dune. The "Queen of Trash" Korla and her scavengers live among its ruins. **(Brian Herbert/KJA for the feud-scene)**

Bela Tegeuse is one of the planets named in the Fremen Zensunni wanderings and in the Almanak en-Ashraf as a waypoint of the displaced. It is a piece of the deep backstory of how the Fremen came to Arrakis.

Junction is the site of Odrade's fatal negotiation with the Great Honored Matre Dama and of Bashar Teg's surprise assault. Murbella Shares Odrade's dying memories here and is proclaimed Mother Commander. The Guild shipyards above Junction later mass-produce warships for Kralizec.

Lankiveil is the gentle Harkonnen branch's seat—Abulurd renounces the family name here—and the birthplace of Feyd-Rautha. The Baron's illegal melange stockpile is hidden in an iceberg on Lankiveil in the Tales story "Blood and Water." Rabban's massacre of the Tula Fjord whale calves scars its economy.

Ecaz is the ally of House Atreides through Leto's political marriage to Ilesa, which ends in her murder at the Caladan wedding. The Ecaz-Grumman conflict drives the young-Paul plot of Paul of Dune, and the "Wedding Silk" tale is set here. Its elaccawood is the material of Paul's throne-bomb.

Buzzell is the soostone source and the site of Bene Gesserit exile for Sisters who break the breeding program (Corysta in "Sea Child"). It is where Dortujla uncovers evidence of the Handlers, Futars, and the Honored Matre "Weapon," and where the ghola Waff later breeds seaworms for ultraspice.

Gamont is mentioned as a destination of the Hajj pilgrimage and as a symbol of the decadent core worlds the Fremen jihad scours. It represents the soft, luxury-dependent Imperium that Arrakis's spice subsidises.

Tupile is where defeated or deposed nobles are sent beyond the reach of assassins, sealed by Guild secrecy. The planet formalises the Imperium's practice of exile over execution—Shaddam is spared to Salusa rather than Tupile because the Qizarate wants him visible. Its existence is part of the Great Convention's mercy machinery.

Zanovar is sterilised by Shaddam IV in the "Great Spice War" as cover to kill his bastard half-brother Tyros Reffa. The strike is one of the Prelude-era atrocities that provoke Landsraad sanctions against the throne. **(Brian Herbert/KJA)**

Richese is a high-technology House that competes with Ix and Tleilax in manufacturing. Its moon Korona is destroyed by atomics in House Corrino; Richese itself is later annihilated by Honored Matre Obliterators in Hunters. **(Brian Herbert/KJA for both strikes)**

Parmentier is the medical centre of the early Imperium and a front in the Butlerian conflict; Dr. Rohan Zim sails from here with the vaccine destroyed in "Red Plague." It represents the Suk oath's institutional vulnerability to political pressure. **(Brian Herbert/KJA)**

Lampadas is the home of the Mentat School and the scene of its destruction by Manford's Butlerians and the cymek assault that kills Manford. The Bene Gesserit "Lampadas horde" of 7.6 million Reverend Mothers' memories, carried by Rebecca, is named for a later Bene Gesserit school world. **(Brian Herbert/KJA)**

Ginaz trains the Imperium's elite Swordmasters—Duncan Idaho, Anari Idaho, Hiih Resser, Rivvy Dinari—through brutal trials culminating in the "Corridor of Death." It is the honour-culture counterpart to the Mentat and Suk schools. Its graduates' fealty is the model of loyal service in the saga.

Kolhar is the proto-Guild headquarters, where Josef Venport's foldspace fleet is built and Navigators are mutated in melange-gas tanks. Manford's atomic bombardment irradiates the planet in Navigators of Dune, forcing the Guild's dispersal. **(Brian Herbert/KJA)**

Denali is the refuge to which Draigo Roget smuggles Anna Corrino and Erasmus's memory core after the fall of Lampadas. Erasmus dies in its acid mists trying to save Anna. It is the Brian Herbert/KJA cradle of the reborn cymek project and the robotic emotional awakening. **(Brian Herbert/KJA)**

Rossak is where Raquella Berto-Anirul founds the first Sisterhood and runs the secret breeding computers; it is disbanded by Emperor Salvador after Dorotea's betrayal. The surviving faction is re-established on Wallach IX. Rossak is the proto-Chapterhouse, the seed of the entire Bene Gesserit institution. **(Brian Herbert/KJA)**

Arrakeen is the political capital of Dune—site of the Atreides residency, the Harkonnen attack, Paul's Battle of Arrakeen, the Fenring banquet attempt, and Leto II's keep. The Grand Palace described in "The Road to Dune" is the largest man-made structure in the Imperium, housing thirty-five million attendants.

Sietch Tabr is Paul and Jessica's refuge after the fall of House Atreides, the place Paul kills Jamis and is named Usul. It is the Fremen base for the climactic assault on Arrakeen and, centuries later, the place of Leto II's death near its ruined caves.

Tuono is where Leto II's wedding to Hwi Noree is held and where Nayla fires the lasgun that sends him into the Idaho River. It is the emblematic site of Museum Fremen cosplay—forms preserved without meaning—and of the God Emperor's death.

Onn is the ritual seat of Leto's Peace, where the Siaynoq ceremony is held and the Face Dancer ambush opens God Emperor of Dune. It embodies the God Emperor's civic architecture—designed for spectacle and control.

Synchrony is the destination of the *Ithaca*'s final foldspace jump and the site of the Kralizec resolution—Duncan's apotheosis, the Oracle's exile of Omnius, and Erasmus's Face Dancer fail-safe. It is the Brian Herbert/KJA machine counterweight to Arrakis. **(Brian Herbert/KJA)**

Dar-es-Balat is the cache of the Ixian-printed Stolen Journals that frame God Emperor of Dune, prophesying the Famine Times and Scattering. Its discovery far in the future is the framing device for the epilogue and the founding document of the Church of the Divided God.

Jacurutu/Fondak is where Jessica sends Gurney and Namri to test Leto with the spice agony. It carries mythic Fremen history as a place of outcast ritual. The spice trance Leto undergoes here precipitates his sandtrout bonding and the Golden Path.

The Sareer is the only place wild sandworm conditions survive on Leto's Arrakis, the site of his spice hoard, and the place of Siona's binding test. Its existence is the visible instrument of hydraulic despotism. Leto's death occurs at its edge, in the Idaho River.

Poritrin is named in the Almanak en-Ashraf and the Great Schools books as a world to which Vorian Atreides ransoms his kidnapped family. It is part of the deep backstory of human colonisation and the Zensunni migration that eventually produced the Fremen. **(Brian Herbert/KJA)**

Grumman is the enemy of Ecaz in the War of Assassins that frames young Paul's era in Paul of Dune. Its ruler Viscount Moritani is secretly a descendant of House Tantor, the family that atomised Salusa Secundus. Duncan Idaho kills his Grumman captor Trin Kronos during the Ginaz trials. **(Brian Herbert/KJA)**