Suggestions by @kathrynsmallen

Nathan Fillion

as Malcolm Reynolds in Firefly

Score: +2

Tim Curry

as Cardinal Richelieu in The three Musketeers Franchise

Score: 0

Chris Hemsworth

as Porthos in The three Musketeers Franchise

Score: +3

Tom Holland

as D’artagnon in The three Musketeers Franchise

Score: +3

Richard Chamberlain

as Cardinal Richelieu in The three Musketeers Franchise

Score: -1

Ken Page

as Pietro Polendina in Live action rwby

Score: +3

Cary Elwes

as Aramis in The three Musketeers Franchise

Score: -2

Kristin Chenoweth

as Willow Schnee in Live action rwby

Score: -2

Rosario Dawson

as Princess Cadance in MLP Recast

Score: +1

David Tennant

as Basil in The Great Mouse Detective

Score: 0

Mark Hamill

as Death in The Arcana

Score: +1

David Tennant

as Gavin in The Arcana

Score: +3

Danny DeVito

as Desperate Father in Raven and the Rose

Score: +1

Aaron Tveit

as King Louis in The three Musketeers Franchise

Score: 0

Jennifer Lawrence

as Constance in The three Musketeers Franchise

Score: 0

Andrew Garfield

as D’artagnon in The three Musketeers Franchise

Score: 0

Tom Hiddleston

as Corvus in Raven and the Rose

Score: +1

Adelaide Kane

as Rose in Raven and the Rose

Score: +1

Jenna Coleman

as Rose in Raven and the Rose

Score: +1

Erin Kellyman

as The Star in The Arcana

Score: +1