Leto II Atreides is a fictional character from the Dune universe created by Frank Herbert. Born at the end of Dune Messiah, Leto is a central character in Children of Dune and is the title character of God Emperor of Dune. From Wikipedia
Reports suggest Pattinson is being considered for the role of Scytale, a shapeshifting antagonist, in Denis Villeneuve's upcoming third Dune film, slated for release in December 2026.