Moritz Petz was born in Hamburg, Germany. Upon completion of his studies, he travelled through Italy, Denmark, and Sweden, working a variety of jobs before returning to study history and German. His interests include street- and puppet-theater, chess, music, and writing. Amélie Jackowski was born in Toulon, France. She studied at the Ecole des arts décoratifs in Strasbourg and at the University of Aix-en-Provence. Her best-known picture book that she illustrated, The Bad Mood has, been translated into over ten languages. Today, Amélie works as a freelance illustrator of numerous children's books in France and regularly takes part in exhibitions.