Suggestions by @jonas

Noah Taylor

as Caius Marcus Senvius in Spartacus

Score: +1

David Franzoni

as Producer in Spartacus

Score: +1

Chiara Mastalli

as Helena Crassus in Spartacus

Score: +1

Kerry Condon

as Claudia Marius in Spartacus

Score: +1

James Marsden

as Caius Crassus in Spartacus

Score: +1

Ramin Djawadi

as Composer in Spartacus

Score: +1

Howard Fast

as Writer in Spartacus

Score: +1

Ridley Scott

as Director in Spartacus

Score: +1

Claes Bang

as Victarion Greyjoy in Rebellion - A Game of Thrones series

Score: 0

James Cosmo

as Jeor Mormont in Rebellion - A Game of Thrones series

Score: +1

August Maturo

as Jon Snow in Rebellion - A Game of Thrones series

Score: -1

Cameron Crovetti

as Robb Stark in Rebellion - A Game of Thrones series

Score: +1

Henry Joseph Samiri

as Robb Stark in Rebellion - A Game of Thrones series

Score: +1

Mason Thames

as Jon Snow in Rebellion - A Game of Thrones series

Score: +1

Paul Kaye

as Thoros of Myr in Rebellion - A Game of Thrones series

Score: +1

Iain Glen

as Ser Jorah Mormont in Rebellion - A Game of Thrones series

Score: +1

Richard Dillane

as Lord Jason Mallister in Rebellion - A Game of Thrones series

Score: +1

Wes Bentley

as Maron Greyjoy in Rebellion - A Game of Thrones series

Score: +1

Kevin Durand

as Rodrik Greyjoy in Rebellion - A Game of Thrones series

Score: +1

Jon Campling

as Germund Botley in Rebellion - A Game of Thrones series

Score: +1