I am going to use my supernatural thriller book 'The Empress Returns' as an example (any excuse for a shameless plug- I know)
My main character is Lewis, a humble young man in his early twenties. Tall and handsome in an understated way, he has a gentleness about him that is heartwarming. He is of average height, with an average build and fair hair.
When thinking about someone for his character, I was looking for similar colouring, but realised that didn't particularly matter, nor did the accent.
The person I picked after a lot of thought is Dylan Minnette (You may now him from 13 reasons why.)
I think with a northern brit accent and a little hi lighting... he would be perfect !
So, who would you place in a supernatural thriller movie for the ultimate blockbuster?