Suggestions by @Jeshisthename

Peter Fonda

as Bucky Barnes in Captain America: The Winter Soldier {1974}

Faye Dunaway

as Natasha Romanoff in Captain America: The Winter Soldier {1974}

Martin Sheen

as Steve Rogers in Captain America: The Winter Soldier {1974}

Vincent Price

as 1970's in Actors who could or could have played Alastor (Hazbin Hotel)

Mandy Patinkin

as 1990's in Actors who could or could have played Alastor (Hazbin Hotel)

Billy Bob Thornton

as Sonar in Dispatch (2005)

Laurence Olivier

as Odin in Thor: The Dark World {1973}

Zsa Zsa Gabor

as Frigga in Thor: The Dark World {1973}

Erik Estrada

as Taneleer Tivan in Thor: The Dark World {1973}

Mako

as Hogun in Thor: The Dark World {1973}

Don Siegel

as Director in Thor: The Dark World {1973}

Stockard Channing

as Sif in Thor: The Dark World {1973}

Chuck Norris

as Fandral in Thor: The Dark World {1973}

Paula Prentiss

as Darcy Lewis in Thor: The Dark World {1973}

Oliver Reed

as Volstagg in Thor: The Dark World {1973}

Fred Williamson

as Algrim in Thor: The Dark World {1973}

George Kennedy

as Malekith in Thor: The Dark World {1973}

Geoffrey Holder

as Heimdall in Thor: The Dark World {1973}

Max von Sydow

as Erik Selvig in Thor: The Dark World {1973}

Jon Finch

as Loki in Thor: The Dark World {1973}