Suggestions by @castingsinmyblood

Guardians Of The Universe

as Hector Elizondo in What if this actor played

Laurence Fishburne

as Actors in Add Anything

Buddy Hackett

as Actors in Add Anything

Hugo Drax

as Bill Nighy in What if this actor played

Karl Stromberg (007)

as Bill Nighy in What if this actor played

Psycho-Man

as Rhys Ifans in What if this actor played

DeSaad

as Rhys Ifans in What if this actor played

Klingon

as Danny Huston in What if this actor played

Tabaqui (The Jungle Book)

as John Leguizamo in What if this actor played

Hercule Poirot

as Robin Williams in What if this actor played

Perry White

as Nick Nolte in What if this actor played

Archie Goodwin (Nero Wolfe)

as Dylan O'Brien in What if this actor played

Bilbo Baggins

as Nigel Hawthorne in What if this actor played

Fitzwilliam Darcy

as Daniel Kaluuya in What if this actor played

Odin Borson

as Mikael Persbrandt in What if this actor played

Kilowog

as R. Lee Ermey in What if this actor played

The Great Deku Tree

as Robert Easton in What if this actor played

Scarlet Witch (Wanda Maximoff)

as Gratiela Brancusi in What if this actor played

Tonto

as Martin Sensmeier in What if this actor played

Rick Jones (Marvel)

as Shia LaBeouf in What if this actor played