Suggestions by @durrandous

Milly Alcock

as Rhaenyra Targaryen (Young) in House of the Dragon

Score: +2

Rupert Friend

as Jon Roxton in House of the Dragon

Score: +2

Sam Heughan

as Tyler Norcross in House of the Dragon

Score: +1

Rhys Ifans

as Otto Hightower in House of the Dragon

Score: +4

Ewan Mitchell

as Aemond Targaryen in House of the Dragon

Score: +7

Tom Glynn-Carney

as Aegon II Targaryen in House of the Dragon

Score: +2

Clive Owen

as Daeron Targaryen in The Black Dragon and The Red

Score: +1

Timothy Dalton

as Eustace Osgrey in The Black Dragon and The Red

Score: +1

Manu Bennett

as Gerold Yronwood in The Black Dragon and The Red

Score: +1

Andrew Lees

as Robb Reyne in The Black Dragon and The Red

Score: +1

Tom Hopper

as Lyonel Crakehall in The Black Dragon and The Red

Score: +1

Richard Armitage

as Amos Bracken in The Black Dragon and The Red

Score: +1

John Hannah

as Ambrose Butterwell in The Black Dragon and The Red

Score: +1

Eoin Macken

as Aegor Rivers in The Black Dragon and The Red

Score: +1

Emmett J Scanlan

as Roland Crakehall in The Black Dragon and The Red

Score: +1

Matt Smith

as Brynden Rivers in The Black Dragon and The Red

Score: 0

Wilf Scolding

as Daemon Blackfyre in The Black Dragon and The Red

Score: 0

Kevin McKidd

as Quentyn Ball in The Black Dragon and The Red

Score: +1

Dean-Charles Chapman

as Trystane Truefyre in House of the Dragon

Score: +1

Toby Jones

as Perkin the Flea in House of the Dragon

Score: +1