A high order of the Bene Gesserit, the Heralds safeguard the orders' spiritual, psychological, and genetic practices, and ensure they are fit for practice throughout the ages. While Reverend Mothers lead the order, Heralds serve as custodians to the Book of Azhar, working from the shadows to codify the secrets of the Known Universe into their sacred text.

With Arrakis as the epicentre of power in the Known Universe, the Heralds have been at work from the planet for millennia, acting as envoys to the Sayyadina to preserve the knowledge of the Fremen. Amid the War of Assassins and the Fremen's retreat into the Deep Desert, the Heralds persist in their mission against any and all adversity.

The upper echelons of the Heralds have come to foster practices that allow individuals to tap into both male and female Other Memory. By sharing this collective knowledge at the spice agony of every Herald, their collective consciousness is primed to understand the vast experience of humanity, and prepare failsafes lest the Kwizath Haderach fails.

Another central tenet in their doctrine is the prescient foretelling of The Scattering. With this prophecy in mind, they have started seeding power and wealth in minor houses - with Arrakis as the ultimate proving ground for those who will be sent out beyond the Known Universe.

While millennia have dulled divides within the Bene Gesserit, the sect's mantra hails back to the Orthodox Sisterhood: “Humility is the foundation of our virtues.”