Suggestions by @sleepspell

Gil Birmingham

as Ben Plumm in A Song of Ice and Fire

Score: +2

Kevin Grevioux

as Moqorro in A Song of Ice and Fire

Score: +1

Rock Anthony

as Robb Stark in A Song of Ice and Fire

Score: -3

Rudy Pankow

as Leo Tyrell in A Song of Ice and Fire

Score: +3

Ben Kingsley

as Reznak mo Reznak in A Song of Ice and Fire

Score: 0

James Cromwell

as Pycelle in A Song of Ice and Fire

Score: +1

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