Suggestions by @nimixsha

Jing Tian

as Cho Chang in Harry Potter (2023)

Score: +2

Nikkita Chadha

as Padma and Parvati Patil in Harry Potter

Score: +2

Martin Freeman

as Arthur Weasley in Harry Potter

Score: +6

henry cavill (young)

as Cedric Diggory in Harry Potter (Recasted)

Score: +2

Henry Cavill

as Cedric Diggory in Harry Potter and the Cursed Child

Score: +1

henry cavill (young)

as Cedric Diggory in Harry Potter and the Goblet of Fire

Score: -2

henry cavill (young)

as Cedric Diggory in Harry Potter

Score: +2

Nicola Peltz Beckham

as Fleur Delacour in Harry Potter

Score: 0