 Gaius Helen Mohiam is a high-ranking Bene Gesserit who serves as Imperial Truthsayer to Padishah Emperor Shaddam IV in "Dune" (1965), and has an ill-fated visit with Paul Atreides on Arrakis in "Dune Messiah" (1969).Murbella is a young Honored Matre captured by the Bene Gesserit in "Heretics of Dune" (1984) and soon indoctrinated into the Sisterhood.In "" (1985), she kills the Honored Matre leader Logno as Bene Gesserit Mother Superior Darwi Odrade is killed, and manages to secure the leadership of both groups.