Lee Kyungkook majored in Furniture Design at Hongik University and studied Graphic Design at the graduate school of the same university. He teaches students who love picture books at Hankyoreh Picture Book Academy while working as a children's book writer. He received the New Writer Award at the Korea Publishing Illustration Association (KPIA) in 1994, and was selected as Illustrator of the Year at the 2008 Bologna Children's Book Fair. To date, Lee has illustrated The Wriggling Book; The Goblin Wriggles; and The Hidden Power, Media.