Suggestions by @mikeypascual

Chris Hemsworth

as Duncan Idaho in Russo brothers' Dune

Stregobor

as Ascended Extra in Sort by Tropes

Leto Atreides I

as Sean Connery in Which characters should actors have played in the 70’s?

Gurney Halleck

as Alec Guinness in Which characters should actors have played in the '60s?

Stilgar

as Anthony Quinn in Which characters should actors have played in the '60s?

Leto Atreides I

as Richard Burton in Which characters should actors have played in the '60s?

Leto Atreides I

as Charlton Heston in Which characters should actors have played in the '60s?

Richard Burton

as 1960's in Actors who could be or could have been Leto Atreides I

Charlton Heston

as 1960's in Actors who could be or could have been Leto Atreides I

Sean Connery

as 1970's in Actors who could be or could have been Leto Atreides I

Gandalf the Grey

as Sean Connery in Which characters should actors have played in the 90's?

Liam Neeson

as Geralt of Rivia in The Last Wish (1993 adaptation)

Rhythm of the Night

as Flash FM in Songs that could have been in Grand Theft Auto: Vice City

Jerome Blake

as Horox Ryyder in Darth Plagueis (1999)

Jerome Blake

as Orn Free Taa in Darth Plagueis (1999)

Jerome Blake

as Rune Haako in Darth Plagueis (1999)

Alan Ruscoe

as Daultay Dofine in Darth Plagueis (1999)

Christopher Lee

as Dooku in Darth Plagueis (1999)

Rob Coleman

as Romeo Treblanc in Darth Plagueis (1999)

Kamay Lau

as Sei Taria in Darth Plagueis (1999)