Nicolas Digard is a screenwriter, TV developer, and author of books for children and adults, including the bestselling series Fluffly et Frigiel. He is passionate about ornithology and photography, and never travels without a camera. Nicolas lives in Paris.

Christine Roussey is the illustrator of Hello in There! She works in advertising, as well as with newspapers, magazines and publishers.

She has published several children's books in Europe. She lives in Paris.