A Bene Gesserit Reverend Mother who rises to lead the Sisterhood during its greatest crisis. Odrade is witty, unorthodox, and possessed of an Atreides bloodline that gives her dangerous impulses toward compassion and individual action - qualities the Bene Gesserit normally breed out.

Leto II is the son of Paul Atreides and Chani, twin brother of Ghanima. Like his father, Leto possesses prescient vision. His role in the Dune saga is one of the most extraordinary in science fiction.

A Bene Gesserit Bashar - supreme military commander - and one of the greatest tactical minds in human history. Teg is old, honourable, and devastatingly effective, a man whose reputation alone is a strategic asset. His loyalty to the Sisterhood is tested when the stakes escalate beyond anything his training prepared him for.

Paul Atreides is the central figure of the Dune saga - the son of Duke Leto Atreides and the Bene Gesserit Lady Jessica, heir to one of the great noble houses of the Imperium. Trained from childhood in combat, politics, and the mental disciplines of both the Bene Gesserit and Mentat traditions, Paul carries the weight of prophecies he did not ask for, including the Bene Gesserit dream of a male Kwisatz Haderach. When House Atreides is granted stewardship of the desert planet Arrakis, sole source of the spice melange, Paul is drawn into a web of imperial politics, Fremen mythology, and visions he can neither fully understand nor escape. Herbert uses Paul across the saga to explore the catastrophic consequences of messianic leadership.

Baron Vladimir Harkonnen is the head of House Harkonnen and the primary antagonist of Dune - a grotesquely corpulent, brilliantly cunning, and utterly amoral schemer who orchestrates the destruction of House Atreides to reclaim control of Arrakis and its spice. The Baron relies on anti-gravity suspensors to support his massive weight and takes sadistic pleasure in the suffering of others. His plan to destroy the Atreides involves a conspiracy with the Emperor himself and the corruption of one of Leto's most trusted advisors. Despite his villainy, the Baron is a formidable political operator whose machinations drive the first novel's plot. His legacy persists through his bloodline in ways that become central to the broader saga.

The Great Honored Matre, supreme leader of the Honored Matres who have returned from the Scattering. She rules through violence and sexual enslavement, directing the campaign to destroy the Bene Gesserit. She is poisoned by her subordinate Logno.

Padishah Emperor of the Known Universe and head of House Corrino. He conspires with Baron Harkonnen to destroy House Atreides, fearing Duke Leto's growing popularity. His Sardaukar troops participate in the attack on Arrakeen. He is deposed by Paul Atreides after the battle of Arrakeen and exiled to Salusa Secundus.

An unnamed senior Honored Matre encountered during the events of Heretics of Dune.

Priest of the Qizarate and former Fedaykin, leader of a conspiracy against Paul

Bene Gesserit Mother Superior of the Gammu Keep where the Duncan Idaho ghola is raised. She secretly opposes Mother Superior Taraza's plans and conspires to have the ghola killed, believing the risk of an awakened Duncan is too great. She is killed during the Tleilaxu Face Dancer attack on the Keep.

A Tleilaxu Master who leads the conspiracy to control the sandworms through Sheeana. He represents the Tleilaxu's desperate bid for relevance as their axlotl tank technology becomes their only bargaining chip. He is killed on Rakis.

Daughter of Duke Leto and Lady Jessica, born with full ancestral memory after Jessica underwent the spice agony while pregnant. Known as St. Alia of the Knife, she kills Baron Harkonnen as a child and later serves as Regent of the Empire after Paul walks into the desert. Her pre-born consciousness makes her vulnerable to possession by her ancestors, and she is ultimately consumed by the Baron's personality.

A heavyset, aggressive Bene Gesserit Mentat and Reverend Mother who serves as an advisor and deliberate counterweight to Mother Superior Odrade. She opposes Odrade's more merciful instincts and advocates ruthless action against both the Honored Matres and internal dissent. She becomes co-leader of the Sisterhood under Murbella.

Chani is a Fremen woman, the daughter of the planetologist Liet-Kynes, and Paul Atreides' great love. She is Paul's partner in every sense - his companion in the desert and the person who keeps him grounded as his power and prescience grow. Chani is a warrior, skilled in the ways of desert survival and combat, and she represents the Fremen values of loyalty, endurance, and practical wisdom that contrast with the political scheming of the Imperial court.

Paul's teacher and the Atreides physician, a graduate of the Suk School bearing the Imperial Conditioning diamond tattoo on his forehead. Long black hair, purple lips, drooping mustache. Secretly a Harkonnen agent coerced through threats to his Bene Gesserit wife Wanna. Wracked by guilt and plans to betray the Duke while hoping to strike the Baron.

Duke of House Atreides, commanding and honourable ruler ordered by the Emperor to take stewardship of Arrakis. Tall, olive-skinned, hawk-featured. Loves Jessica and Paul deeply while carrying the burden of knowing the move to Arrakis is a Harkonnen-Imperial trap.

Duncan Idaho is a loyal Atreides swordmaster, one of the finest fighters in the Imperium and deeply devoted to Duke Leto and his family. Trained by the Ginaz Swordmasters, Duncan combines exceptional combat ability with a charismatic personality and genuine warmth. He serves as weapons instructor to Paul Atreides and acts as the Duke's ambassador to the Fremen.

A Guild Steersman, one of the mutated navigators who fold space to enable interstellar travel. Edric floats in a tank of spice gas, his prescience creating a blind spot that hides the conspiracy against Paul from the Emperor's own oracular sight.

Grandson of the deposed Emperor Shaddam IV, a young man of intelligence and principle raised on Salusa Secundus. Farad'n is his mother's pawn in her schemes to reclaim the throne, but proves to be more thoughtful and independent than she expects.

The Baron's nephew and designated heir, a young gladiator-aristocrat groomed to be the public face of House Harkonnen. Where the Baron is grotesque, Feyd-Rautha is handsome and charismatic - but no less cruel, trained from youth in the arts of manipulation and murder.