Suggestions by @shootbanana

Ansel Elgort

as Loras Tyrell in ASOIAF

Hugh Dancy

as Garlan Tyrell in ASOIAF

Chris Pine

as Ned Stark in ASOIAF

Victoria Pedretti

as Lyanna Stark in ASOIAF

Alexander Siddig

as Doran Martell in ASOIAF

Henry Cavill

as Robert Baratheon (young) in ASOIAF

Hunter Schafer

as Daenerys Targaryen in ASOIAF

Sophie Cookson

as Jeyne Westerling in ASOIAF

Lucy Boynton

as Daenerys Targaryen in ASOIAF

Kristine Froseth

as Daenerys Targaryen in ASOIAF

Jessica Brown Findlay

as Lyanna Stark in ASOIAF

Peter Capaldi

as Aerys II Targaryen in ASOIAF

Eleanor Tomlinson

as Catelyn Tully (young) in ASOIAF

Timothée Chalamet

as Satin in ASOIAF

Sebastian Stan

as Brandon Stark in ASOIAF

Pedro Pascal

as Oberyn Martell in ASOIAF

Aiysha Hart

as Arianne Martell in ASOIAF

Millie Bobby Brown

as Arya Stark in ASOIAF

Dafne Keen

as Arya Stark in ASOIAF

Olivia Cooke

as Margaery Tyrell in ASOIAF