Chani Kynes, also known as Chanisihayah, (10,178-10,209) was the Fremen bound concubine of Paul Atreides, and the mother of his three children: Leto Atreides II the Elder, and the twins Leto Atreides II and Ghanima Atreides.
Chani was born on Arrakis, the daughter of the half-Fremen planetologist Liet Kynes and his full-Fremen wife. She gradually developed into a formidable fighter, and by the time of her father's death was serving under naib Stilgar.
Introduction to Paul
When Paul and his mother Jessica escaped from Arrakeen after the invasion of House Harkonnen they quickly found themselves in the deep desert of Arrakis. There, while sheltering in a cave system from a sandworm they were intercepted by a group of traveling Fremen, which included Chani.
Her introduction to Paul came during a tense stand-off. Chani was familiar to the Atreides heir because of her appearance in his prescient visions prior to his arrival on Arrakis. But to her Paul was initially a stranger.
Life with Paul
After the integration of Paul and Jessica into the Fremen by Stilgar, Chani began her long-lasting love affair with the young Duke, and eventually bore him a son, Leto. However, their first born was murdered by a House Harkonnen raiding party while Paul, Chani and Jessica were away visiting another sietch.
After the defeat of House Harkonnen and House Corrino on Arrakis, and Paul's subsequent ascent to Emperor and marriage to Irulan Corrino, Chani became his official concubine and remained his exclusive partner.
Life with Muad'Dib
Pregnancy and Death
Seven years later, when Chani became pregnant once again, Irulan sought to usurp her and become the bearer of Paul's children. She found support with the Bene Gesserit, who feared the impact of Chani's largely-unknown bloodline on their breeding program.
However, Irulan's attempts to terminate Chani's pregnancy through drugs failed. After a traumatic pregnancy, (the pregnancy was accelerated by Spice, taking only five months instead of nine) Chani gave birth to twins, who Paul named Leto and Ghanima.
Irulan's treachery did, however, bring a secondary result. Chani died shortly after giving birth to the twins, due to complications stemming from the drugs Paul's titular wife had been surreptitiously feeding her.
As a Ghola Re-Born
Kralizec on Synchrony
Behind the Scenes
In the original Dune novels, Chani's birth year was 10,178. However, in the Dune prequel novels, her birth year was given as 10,174, making her older than Paul.