Suggestions by @silmarils

Rosie Huntington-Whiteley

as Finduilas in The Silmarillion

Jonathan Groff

as Celegorm in The Silmarillion

Joel Kinnaman

as Finrod in The Silmarillion

Matthew Lewis

as Caranthir in The Silmarillion

Nicholas Hoult

as Maglor in The Silmarillion

Cobie Smulders

as Morwen in The Silmarillion

Aaron Taylor-Johnson

as Earendil in The Silmarillion

Jason Isaacs

as Thingol in The Silmarillion

Anna Popplewell

as Elwing in The Silmarillion

Jonathan Rhys Meyers

as Lorien in The Silmarillion

John Rhys-Davies

as Lorien in The Silmarillion

Jon Bernthal

as Aule in The Silmarillion

William Moseley

as Tuor in The Silmarillion

Lily James

as Idril in The Silmarillion

Hayley Atwell

as Nerdanel in The Silmarillion

David Tennant

as Eol in The Silmarillion

Mark Strong

as Mandos in The Silmarillion

Katie McGrath

as Thuringwethil in The Silmarillion

Ben Foster

as Mairon in The Silmarillion

Emma Watson

as Vana in The Silmarillion