Suggestions by @sleepspell

Javier Bardem

as Jorah Mormont in A Song of Ice and Fire

Score: +2

Yasmine Al Massri

as Mellario in A Song of Ice and Fire

Score: +1

Paul Blackthorne

as Jory Cassel in A Song of Ice and Fire

Score: +1

Ray Winstone

as Rodrik Cassel in A Song of Ice and Fire

Score: +1

An Seo-hyun

as Toph Beifong in Avatar: The Last Airbender

Score: +1

Daria Milky

as Ygritte in A Song of Ice and Fire

Score: +4

Robbie McKinnon

as Joffrey Baratheon in A Song of Ice and Fire

Score: +4

Freida Pinto

as Elia Martell in A Song of Ice and Fire

Score: 0

Alyda Grace

as Sansa Stark in A Song of Ice and Fire

Score: +5

Paul Boche

as Viserys Targaryen in A Song of Ice and Fire

Score: +2

George Griffiths

as Robb Stark in A Song of Ice and Fire

Score: -5

Atsushi Sakurai

as Orochimaru in Naruto

Score: +4

Keisuke Asano

as Rock Lee in Naruto

Score: +1

David Chiang

as Orochimaru in Naruto

Score: +3

Dylan Fosket

as Kimimaro in Naruto

Score: +1

Valery Kovtun

as Rhaegar Targaryen in A Song of Ice and Fire

Score: 0

Drake Hogestyn

as Barristan Selmy in A Song of Ice and Fire

Score: -1

Hal Yamanouchi

as Sozin in Avatar: The Last Airbender

Score: +1

Vladimir Kulich

as Kevan Lannister in A Song of Ice and Fire

Score: 0

Clive Standen

as Eddard Stark in A Song of Ice and Fire

Score: 0