SPOILERS ahead for Dune: Part Two, as well as the novels future Dune films could be based on.

Summary

• The fate of Feyd-Rautha & Lady Margot's daughter in Dune books contrasts with the significance implied in Dune: Part Two.
• Marie Fenring, raised as an assassin & Bene Gesserit, is killed by Alia Atreides, adding depth to the story and Alia's character.
• Dune 3 should address the unresolved fate of Feyd-Rautha's daughter, Marie Fenring, showing a critical event for Alia Atreides' development.

A Dune: Part Two plot line with Feyd-Rautha and Lady Margot Fenring sees the pair conceive a child, though its fate is unexplained. While Dune: Part Two occurs primarily on Arrakis, an extended sequence in the second act takes audiences to Giedi Prime, the homeworld of House Harkonnen. Film viewers are introduced to Austin Butler's menacing rendition of Feyd-Rautha Harkonnen, a psychotic killer who also happens to be the Baron's nephew. He's met by Lady Margot (Léa Seydoux), a member of the Bene Gesserit, who seduces him.

The Bene Gesserit orchestrating events is an enormous aspect of the Dune movies, as their goal of producing the Kwisatz Haderach through selective breeding is central to Paul's origin. Similar to how they send Jessica to breed with Leto Atreides, Lady Margot is sent to conceive a child with Feyd-Rautha to preserve the Harkonnen bloodline for their breeding program, leaving a chance at another chosen one, or Kwisatz Haderach. However, since Paul is the Kwisatz Haderach, the baby ultimately doesn't play a significant role going forward.

Feyd-Rautha & Lady Margot's Daughter Does Not Have A Big Role In The Dune Books

Feyd-Rautha and Lady Margot's daughter, Marie Fenring, was raised as an assassin and Bene Gesserit.

Since the plot thread was put in the film, the baby of Feyd-Rautha and Margot Fenring seems to have some significance. However, their daughter ultimately never amounts to much, and the dramatic purpose of the scene is to demonstrate the authoritative position the Bene Gesserit are in, even when things have gone ary with Paul. The conception also involves Margot establishing a "Hypno-ligation," allowing them control over him.

Marie Fenring was raised by her mother and her husband, Count Hasimir Fenring, who trained her to be an assassin and a Bene Gesserit.

Feyd-Rautha and Lady Margot's daughter is named Marie Fenring, and her only appearance is in the novel Paul of Dune, written by Brian Herbert and Kevin J. Anderson. Frank Herbert's son, Brian Herbert, has expanded his father's universe with several prequels, sequels, and other works in the Dune universe. That said, Marie Fenring was raised by her mother and her husband, Count Hasimir Fenring, who trained her to be an assassin and a Bene Gesserit.

Feyd-Rautha & Lady Margot's Daughter Is Killed By Alia Atreides

Marie Fenring is sent to assassinate Paul Atreides, but his younger sister, Alia, thwarts the attempt.

At the age of 6, just five years after Paul's ascendance at the end of Dune: Part Two, Marie Fenring is sent to assassinate Paul on Arrakis. As she's a similar age to Paul's younger sister Alia, Anya Taylor-Joy's unborn character in Dune: Part Two, Marie is established in the royal court as her playmate. After six months, the assassination attempt on Paul is finally made, with Marie nearly landing the kill before Alia stops her, stabbing her with a blade and killing her. The kill earns Alia Atreides the nickname "Alia of the Knife."

Also present during the assassination attempt are Lady Margot and Hasimir Fenring. As they're rounded up to be imprisoned, Margot reveals Marie's origins to Paul, momentarily stunning him with the news that Marie was Feyd-Rautha's daughter, allowing Hasimir a window to stab Paul. The wound should have been fatal, but Chani gives Paul the Water of Life, allowing him to repair himself internally. The Fenrings are exiled to the planet Salusa Secundus. Following the Dune: Part Two ending, Emperor Shaddam Corrino IV is also sent to this same prison planet.

Dune 3 Should Show What Happened To Feyd-Rautha's Daughter

Dune: Part Three will adapt the novel Dune: Messiah, but some events between books are worth incorporating, too.

Dune: Part Three is still in early development, with Denis Villeneuve currently writing a script based on the novel Dune: Messiah. In Frank Herbert's original series, Dune: Messiah is the direct follow-up to Dune, though twelve years have ed between books. A number of critical events happen between books, mainly Paul's deadly holy war that claims the lives of 61 billion people. Many of these events are fleshed out further in Brian Herbert and Kevin J. Anderson's novels, and deciding what to draw directly from Dune: Messiah and what to incorporate from the extended stories will be vital to adaptation.

The fate of Marie Fenring is one such event that should be included in Dune: Part Three. Not only would it tie up a loose end from Dune: Part Two, but it would also help establish Alia Atreides as a character, as she was relegated to existing in visions in the second film. In the Dune novel, Alia is born before Paul's ascension as a sentient baby who, at the age of 4, is the one to kill Baron Vladimir Harkonnen. Since Paul committed this act in the film, incorporating different elements of Alia's childhood in Dune: Part Three is essential to showing her unique power.