Suggestions by @brianwillis

Andy Samberg

as Rincewind in Discworld

Mark Gatiss

as Lord Havelock Vetinari in Discworld

Dafne Keen

as Alice Band in Discworld

Millie Bobby Brown

as Alice Band in Discworld

Dave Bautista

as Chrysoprase in Discworld

Terry Crews

as Chrysoprase in Discworld

Andre Braugher

as Death in Discworld

James Fox

as Lord Rust in Discworld

Richard E. Grant

as Bela de Magpyr in Discworld

Phil Davis

as Albert in Discworld

Joel McKinnon Miller

as Fred Colon in Discworld

David Bradley

as Cohen the Barbarian in Discworld

Ke Huy Quan

as Twoflower in Discworld

Jennifer Saunders

as Granny Weatherwax in Discworld

Paddy Considine

as Samuel Vimes in Discworld

Jack Reynor

as Miles O'Brien in Star Trek TNG Kelvin Fan Cast

Andrew Scott

as Data in Star Trek TNG Kelvin Fan Cast

Ana de Armas

as Deanna Troi in Star Trek TNG Kelvin Fan Cast

Dirk Blocker

as Professor Pyg in Batman

Dan Blocker

as Professor Pyg in Batman