Suggestions by @remkosel

Lucas Till

as The Flash in Perfect DC Heros and Villians

Score: 0

Antony Starr

as Reverse Flash in Perfect DC Heros and Villians

Score: +1

Hugo Weaving

as Salazar Slytherin in Hogwarts

Score: +3

Ewan McGregor

as Godric Gryffindor in Hogwarts

Score: +1

Morven Christie

as Rowena Ravenclaw in Hogwarts

Score: +2

Sian Reese-Williams

as Helga Hufflepuff in Hogwarts

Score: +1

Nia Vardalos

as Child's Play in Hottest Actress by Franchise

Score: +1

Sarah Sherman

as Child's Play in Hottest Actress by Franchise

Score: +1

Rachael Ancheril

as Child's Play in Hottest Actress by Franchise

Score: +1

Lachlan Watson

as Child's Play in Hottest Actress by Franchise

Score: +1

Alex Paxton-Beesley

as Child's Play in Hottest Actress by Franchise

Score: +1

Ayesha Mansur Gonsalves

as Child's Play in Hottest Actress by Franchise

Score: +1

Lara Jean Chorostecki

as Child's Play in Hottest Actress by Franchise

Score: +1

Annie Briggs

as Child's Play in Hottest Actress by Franchise

Score: +1

Jensen Ackles

as Bruce Wayne in DC Male Characters

Score: +1

Leonardo DiCaprio

as Oliver Queen in DC Male Characters

Score: +1