what would be the best word for 'layer' in this context?

Question

I want to talk about the layers in a film

i.e. comedy adds another layer to the film / there are many layers to the character

i can only find words that relate to layers of rock or the ozone layer etc

thanks for any help

Answer 1

perhaps you might try "matiz," "aspecto," or "rasgo"

Answer 2

I'd probably use "tema".