Suggestions by @gth22

Karen Allen

as Elizabeth Swann in Pirates of the Caribbean (1981)

Score: 0

Javier Bardem

as Kas'im in Darth Bane

Score: +1

Harry Styles

as Set Harth in Darth Bane

Score: +2

Lucas Till

as Johun Othone in Darth Bane

Score: +2

Cliff Curtis

as General Hoth in Darth Bane

Score: +1

Jonathan Pryce

as Qordis in Darth Bane

Score: +1

Oded Fehr

as Skere Kaan in Darth Bane

Score: +1

John Travolta

as Governor Ratcliffe in Disneys Pocahontas

Score: -1

Zac Efron

as John Smith in Disneys Pocahontas

Score: 0

Tom Holland

as Thomas in Disneys Pocahontas

Score: +2

Amber Midthunder

as Pocahontas in Disneys Pocahontas

Score: +2

Brandon Routh

as Bowen in Dragonheart

Score: 0

Tom Felton

as Lord Felton in Dragonheart

Score: +1

Karen Gillan

as Kara in Dragonheart

Score: +1

Cate Blanchett

as Queen Aislinn in Dragonheart

Score: +1

Joely Richardson

as Queen Aislinn in Dragonheart

Score: +1

Andy Serkis

as Gilbert in Dragonheart

Score: +1

Pierce Brosnan

as Draco in Dragonheart

Score: +3

Toby Kebbell

as Darth Bane in Darth Bane

Score: -2

Millie Bobby Brown

as Zannah in Darth Bane

Score: -4