The native people of Arrakis - desert-hardened survivors who have adapted to the planet's brutal conditions over generations, developing a culture centred on water conservation, martial prowess, and a deep spiritual connection to the desert and its sandworms. Dismissed by the Imperium as primitive savages, the Fremen are in fact among the most formidable fighters in the known universe. Their society is organised around sietches (underground communities), led by Naibs, with a Reverend Mother serving as spiritual guide. They carry their own prophecies of a coming Mahdi - the one who will lead them to paradise - which colour every encounter they have with offworlders.