Readers of the book are well aware the character of Liet Kynes — the ecologist and Judge of the Change appointed by the Imperium to ensure there is a fair transfer of power over Arrakis from the Harkonnen to House Atreides — is a man. However, the 2021 movie retcons Kynes as a woman (portrayed by Sharon Duncan-Brewster). It is one of the refreshing alterations in the new adaptation.