Suggestions by @sleepspell

Ian McDiarmid

as Maester Aemon in A Song of Ice and Fire

Score: +1

Bill Murray

as The Kindly Man in A Song of Ice and Fire

Score: +1

Ron Perlman

as Tormund Giantsbane in A Song of Ice and Fire

Score: +1

Laurence Fishburne

as Thoros of Myr in A Song of Ice and Fire

Score: +1

Gérard Depardieu

as Illyrio Mopatis in A Song of Ice and Fire

Score: +3

Ruby Rae

as Shireen Baratheon in A Song of Ice and Fire

Score: +2

Elliott Kerley

as Ron Weasley in Harry Potter (Perfect Casting)

Score: -6

Elliott Kerley

as Ron Weasley in The Harry Potter Series (2021 - 2031)

Score: +1

Dawson Fletcher

as Robb Stark in A Song of Ice and Fire

Score: +1

Paul Eryk Atlas

as Benjen Stark in A Song of Ice and Fire

Score: +2

Eoin Macken

as Eddard Stark in A Song of Ice and Fire

Score: +4

Joe Alwyn

as Leo Tyrell in A Song of Ice and Fire

Score: +2

Daniel Craig

as Kevan Lannister in A Song of Ice and Fire

Score: -2

Yuri Kolokolnikov

as Kevan Lannister in A Song of Ice and Fire

Score: +4

Bar Paly

as Tank Girl in Tank Girl

Score: -14

Pasha Harulia

as Nymphs in Greek Mythology

Score: +1

Halo Berge

as Androgynous in Face claims 101

Score: 0

Stella Lucia

as Brienne of Tarth in A Song of Ice and Fire

Score: +2

Asia Kate Dillon

as Androgynous in Face claims 101

Score: +4

Simona Ksenia Kust

as Sakura Haruno in Naruto

Score: +1