Suggestions by @ariddler

Cara Delevingne

as Aelin Galanthynius in Throne of Glass

Score: -4

Kat Graham

as Nehemia Ytger in Throne of Glass

Score: +2

Matt Sato

as The Bone Carver in A Court of Thorns and Roses

Score: +2

Mackenzie Foy

as Evangeline in Throne of Glass

Score: +1

Henry Cavill

as Lorcan Salvaterre in Throne of Glass

Score: +2

Pheobe Tonkin

as Elide Lochan in Throne of Glass

Score: +1

Rose Leslie

as Ansel in Throne of Glass

Score: +2

Michael Fassbender

as Arobynn Hamel in Throne of Glass

Score: +3

Sam Claflin

as Sam Cortland in Throne of Glass

Score: +2

Orlando Bloom

as Tamlin in A Court of Thorns and Roses

Score: 0

Margot Robbie

as Morrigan in A Court of Thorns and Roses

Score: +1

Mila Kunis

as Amren in A Court of Thorns and Roses

Score: -3

Tom Hiddleston

as The Suriel in A Court of Thorns and Roses

Score: +3

Bill Skarsgård

as Eris Vanserra in A Court of Thorns and Roses

Score: +2

Lily James

as Nesta Archeron in A Court of Thorns and Roses

Score: +1

Eva Green

as Amarantha in A Court of Thorns and Roses

Score: +2

Theo James

as Jurian in A Court of Thorns and Roses

Score: +3

Claire Holt

as Ianthe in A Court of Thorns and Roses

Score: +2