Suggestions by @mishas

Jacob Anderson

as Dragon Surgeon Keynes in Temeraire (Series)

Score: +1

Chiwetel Ejiofor

as Dragon Surgeon Keynes in Temeraire (Series)

Score: -1

John Boyega

as Dragon Surgeon Keynes in Temeraire (Series)

Score: +1

Thomas Brodie-Sangster

as Volatilus in Temeraire (Series)

Score: +1

Asa Butterfield

as Levitas in Temeraire (Series)

Score: +1

Tom Holland

as Levitas in Temeraire (Series)

Score: +1

Chike Chan

as Temeraire in Temeraire (Series)

Score: -1

Christopher Goh

as Temeraire in Temeraire (Series)

Score: +2

Hon Ping Tang

as Temeraire in Temeraire (Series)

Score: -1

Benedict Wong

as Temeraire in Temeraire (Series)

Score: -1

Sean Bean

as Excidium in Temeraire (Series)

Score: +1

Ian McKellen

as Celeritas in Temeraire (Series)

Score: +1

David Tennant

as Maximus in Temeraire (Series)

Score: -1

Dua Lipa

as Lily in Temeraire (Series)

Score: +1

Gemma Arterton

as Lily in Temeraire (Series)

Score: +1

Nicholas Hoult

as Captain Jeremy Rankin in Temeraire (Series)

Score: +1

Will Poulter

as Captain Jeremy Rankin in Temeraire (Series)

Score: -1

Gerard Butler

as Captain Berkley in Temeraire (Series)

Score: +1

Isabela Merced

as Captain Catherine Harcourt in Temeraire (Series)

Score: +1

Alyvia Alyn Lind

as Emily Roland in Temeraire (Series)

Score: +1