Sophia: Luke do you have a sister?

Luke: I do, I have a younger sister called Amelia.

Sophia: Why did you decide to create a story around a young girl when you are clearly a boy?

Luke: There wasn’t a moment when I decided whether the main character would be a boy or a girl. She was just a character I was drawing a lot and she happened to be a girl and I started to think about what sort of stories she might be involved in.

Sophia: How did you decide on the name Trolberg?

Trolberg is the city Hilda and her mum move to after the first two books in the series. It does though cause a few issues with its spelling. "There’s only one 'L' in Trolberg, which most people seem to get wrong, including my publisher and people involved with the show," Luke says.

Luke: My thinking was that early settlers would have named the place after what they found there. “Berg” means mountain and the “Trol” is in reference to the trolls that live there. Plus I thought it sounded like a real place name.