Count Hasimir Fenring is a fictional character in the Dune universe created by Frank Herbert. He is featured in the 1965 science fiction novel Dune by Frank Herbert, and is also a key character in the Prelude to Dune trilogy by Brian Herbert and Kevin J. Anderson. He later appears in the 2008 novel Paul of Dune, and the Caladan Trilogy (2020–2022).

Arrakis —informally known as Dune and later called Rakis—is a fictional desert planet featured in the Dune series of novels by Frank Herbert. Herbert's first novel in the series, 1965's Dune, is considered one of the greatest science fiction novels of all time, and it is sometimes cited as the best-selling science fiction novel in history.