Face Dancer - in The Dune Series

In The Dune Series

In Dune Messiah, the second book in the series, the Tleilaxu use a ghola of Duncan Idaho in an attempt to undermine the Emperor Paul Muad'dib and take control of the Imperium. The Face Dancer Scytale uses his talents to facilitate an assassination attempt on the Emperor. Paul can immediately detect the replacement, but lets the plot play out to see where it leads and determine its place in his prescient visions.

Face Dancers also play a role in God Emperor of Dune. They replace nearly everyone in the Ixian embassy on Arrakis, and attempt to assassinate Leto using a force of approximately fifty Face Dancer duplicates of Duncan Idaho. This causes Leto's guards to hesitate in case one is the real Duncan, but the attempt fails as the Face Dancers are defeated by Leto's Fish Speaker army and Duncan himself. Leto employs the Bene Gesserit Anteac to spot the Face Dancer impersonators in his midst so they can be eliminated (although Leto can detect them himself).

At the beginning of Heretics of Dune, the Bene Tleilax feel ready to take control of the Imperium. They have achieved their long-term plan of developing Face Dancers who are perfect mimics, able to take mind prints of the people they imitate and possess all their memories. This leaves an ordinary person with no real way of detecting a replacement; the Tleilaxu believe that the Bene Gesserit cannot detect these new Face Dancers either. The Tleilaxu intend to take control of the other powers in the Imperium by replacing their leaders with Face Dancers. However, the Tleilaxu plan is ultimately ruined by its flaws. The Tleilaxu have never tested the Face Dancers over long periods independent of a master's control. It develops that, after playing their roles for too long, the new Face Dancers come to think of themselves as the people they have printed and forget their Tleilaxu origins. They effectively become the people they are mimicking, passing beyond the control of the Tleilaxu. Nor are the new Face Dancers undetectable to the Bene Gesserit. By the end of the novel, it looks as if the Bene Tleilax will be forced into an alliance with the Bene Gesserit.

In Chapterhouse: Dune, The Reverend Mother Dortujla describes being approached by a group of Futars and "Handlers" wishing to ally with the Bene Gesserit against the Honored Matres. Dortujla is struck with the impression that the Handlers are Face Dancers, but standard Bene Gesserit detection techniques are unable to confirm her suspicions. These Handlers supposedly bred and trained the Futars to hunt Honored Matres. In his vision of the mysterious observers Daniel and Marty, Duncan Idaho notes:

Reassuring faces. That thought aroused Idaho's suspicions because now he recognized the familiarity. They looked somewhat like Face Dancers, even to the pug noses ... And if they were Face Dancers, they were not Scytale's Face Dancers. Those two people behind the shimmering net belonged to no one but themselves.

In the last chapter of the book, Marty and Daniel themselves mention independent Face Dancers:

" have such a hard time accepting that Face Dancers can be independent of them." "I don't see why. It's a natural consequence. They gave us the power to absorb the memories and experiences of other people. Gather enough of those and..." "It's personas we take, Marty." "Whatever. The Masters should've known we would gather enough of them one day to make our own decisions about our own future."