Denis Villeneuve's "Dune" saga depicts this environmental ... leaving the loyal citizenry behind, Count Hasimir Fenring was named Siridar-Absentia and was meant to serve as an interim ruler ...

Count Fenring. It's possibly he could be in the third movie. Léa Seydoux had a minor role in Dune: Part Two as Lady Margot Fenring, one of the Bene Gesserit. Lady Margot is not in Dune Messiah ...