Alma Mavis Taraza was the Bene Gesserit Mother Superior approximately 1500 years after the death of Leto Atreides II. She was in control of the Bene Gesserit when the Rakian Priesthood discovered that a village girl named Sheeana could command the sandworms. Upon discovering this, Taraza ordered Reverend Mother Darwi Odrade to take the girl under her wing and train her as a Bene Gesserit. Taraza had an interview with Tleilaxu Master Tylwyth Waff, and, with the help of Odrade, made an alliance with the Bene Tleilax in order to defend themselves against the threat of the Honored Matres.