Suggestions by @gabrielbrancatte

Cole Sprouse

as Caranthir in The Silmarillion

Matthew McNulty

as Turgon in The Silmarillion

Emily Blunt

as Galadriel in The Silmarillion

Bryan Cranston

as Mandos in The Silmarillion

Mads Mikkelsen

as Elu Thingol in The Silmarillion

Christian Bale

as Húrin Thalion in The Silmarillion

Jarred Blakiston

as Fingon in The Silmarillion

Charlie Hunnam

as Tuor in The Silmarillion

Rebecca Ferguson

as Morwen in The Silmarillion

Cody Fern

as Sauron in The Silmarillion

Ian Somerhalder

as Fëanor in The Silmarillion

Cody Fern

as Fëanor in The Silmarillion

John Noble

as Glaurung in The Silmarillion

Cody Fern

as Morgoth in The Silmarillion

Tom Hiddleston

as Túrin Turambar in The Silmarillion

Henry Cavill

as Morgoth in The Silmarillion

Josh Duhamel

as Captain Atom in Animal Man

Alexander Skarsgård

as Thor Odinson in The Ultimates

Tyler Hoechlin

as Guts in Berserk

Sade

as Tar-Míriel in The Lord of the Rings: The Rings of Power