Mixed Canonicity: This article or section refers to elements from both Original Dune and Expanded Dune.

Bene Tleilax, or the Tleilaxu as they were more commonly called, were a group of secretive, genetically altered humans who inhabited Tleilax, the sole planet of the star Thalim.

The customs and ethics of the Bene Tleilax led to widespread revulsion by the other cultures of the Known Universe, a reaction that did little to quench the Tleilaxu's hunger to subjugate their rivals.


During the Butlerian Jihad

Around the years of the Butlerian Jihad, Tlulax was an Unallied planet. The Tlulaxa worked as merchants and slavers. Tlulaxa scientists were noted geneticists and cloners and the planet was known for its organ farms. During the war, due to the heightened demand, slaves were taken as organ reservoirs. This was revealed by Vorian Atreides, and public opinion had been inflamed against the genetic researchers; outraged mobs destroyed the organ farms and most of the Tlulaxa went into hiding, hated by the League.

The Corrino Empire

Ten thousand years later, during the time near the end of Corrino Empire, the Tleilax had re-established themselves, and had curried positions of favor with the Imperial House. The Master Researcher Hidar Fen Ajidica, presented a plan to synthesize melange to Emperor Elrood Corrino IX, and persuaded him to allow the Tleilax to conquer Ix from House Vernius.

Though the Tleilax tried in vain to completely synthesize spice, delusions of grandeur came into the thoughts of Ajidica, as he came close to mimicking melange with amal, or as he called it, Ajidimal. Ajidica envisioned the advent of Tleilaxu hegemony throughout the Known Universe, and sent out colony ships of Enhanced Face Dancers, to prepare "the way" for his ascendancy. Project Amal, as the doomed venture came to be known, fell apart; as Ix was re-conquered by House Vernius, Ajidica died from an overdose on Amal, and the Enhanced Face Dancers were lost contact with.

The Atreides Empire and the Return

After Paul Atreides ascended the Golden Lion Throne, the Tleilaxu tried in vain to create a rival Kwisatz Haderach, to challenge Paul's rule. From Thalidei, on Tleilax, gholas named Thallo were grown, and the first was awakened. After just a short time, Thallo, used his prescient ability to discern that he was a failed attempt to create a super-being. Distraught, Thallo attempted to mass kill the citizens of Thalidei with nerve gas, but was instead killed by Marie Fenring, the assassin-trained daughter of Hasimir Fenring and Margot Fenring.

The Tleilaxu then participated directly in the plot to destroy the royal family with the gift to Paul Atreides of Hayt, the ghola of Duncan Idaho. When Chani died giving birth to the twins, Leto II and Ghanima Atreides, the Face Dancer Scytale was then killed by the Emperor, with the help of his new-born son.

Over five thousand years later, after the reign of the God Emperor, during the Return, the Honored Matres decimated Tleilax, the only known Tleilaxu survivor was the most junior Master Scytale. However, his possession of numerous individuals' genetic material (including that of many Tleilaxu) made it possible for him to recreate his culture. Additionally, the successful spread of the Tleilaxu that were sent out during The Scattering, made it possible that others may have survived in uncharted space, undiscovered by the Honored Matres.


The Tleilaxu were an inherently isolationist culture that was dominated by a strict hierarchy and an overriding religious zeal. They had long focused their efforts on genetics, and the pursuit of spiritual elevation through physical refinement.

Originally trade also formed an important part of their culture. However, following revelations of their organ harvesting methods during the Butlerian Jihad they became collectively scorned and despised. This, coupled with active persecution against them, caused their trading connections to be dramatically reduced, and led to a significant change in their overall attitude to the wider universe. ==References and notes==

Tleilaxu merchants grew a long braid; the braid symbolizes prosperity -- a merchant must cut his braid if he were to experience an unsuccessful year. Tleilaxu also sharpened their teeth.


The Tleilaxu were separated into several different classes, each of which had a distinct physical appearance and role within their society. The main groups were:

  • Tleilaxu Masters: Physically they looked similar to small humans, most often with small close-set eyes and a set of small pointed teeth.
  • Face Dancers: The warrior and worker class, who were capable of adapting their physical appearance to a specific task at hand. Their doppelganger ability was also used to perform espionage against other groups. This group also included Enhanced Face Dancers created by Hidar Fen Ajidica and improved upon by Erasmus.
  • Axlotl Tanks: Little more than incubation vessels, this class bred all Tleilaxu, as well as other beings (such as gholas). It is believed these were what remain of the female sex of the Tleilaxu.


The Tleilaxu followed a strict and fervent spiritual ideology that derived itself from both the Zensunni and the Zensufi theologies. As with most cultures within the Known Universe, their faith was monotheistic. While they did not place significant importance on the Giant Sandworm, they did credit great importance to Leto Atreides II, who they saw as "God's Messenger".

The details of their religion remained largely hidden until the arrival of the Honored Matres, at which point the leadership of the Bene Gesserit, one of their great rivals, discovered some key posits of their faith.

List of Known Tleilaxu by Class

Tleilaxu Masters

Ambassadors and Envoys

Face Dancers

Traders, Scientists, and Scribes


Tleilaxu Ranks

In addition to their biological classes, Tleilaxu society and structure was strictly organized by rank.

  • Mahai or Abdl: the Master of Masters, leader of the Tleilaxu
  • Masheikh: rulers chosen from the Master class
  • Khasadar: guards and combat-ready personnel
  • Domel: domestic servants and low-level personnel

Behind the Scenes

The true reason for the revulsion of the Bene Tleilax was not cataloged by Frank Herbert. The organ harvesting plot was outlined by Brian Herbert and Kevin J. Anderson in their Legends of Dune prequel novels.

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