Joachim Masannek is a German author and screenwriter, best known for creating the popular children's book series Die Wilden Kerle (The Wild Boys). This series, which features a group of adventurous boys who play soccer, has gained significant popularity in Germany and has been adapted into several films. In addition to his work on Die Wilden Kerle, Masannek has written other children's books and has been involved in various media projects. His storytelling often emphasizes themes of friendship, teamwork, and the joys of childhood, making his work appealing to young readers and audiences.