Charles is a children's picture book author. He has written a number of titles for Wild Dog Books across a range of series. These include the Our Past series, the Extreme Weather series, the Going Supernova series, Butterflies, Horses, Honey Bees, Frogs and Birds of Prey CloseUp, the Then wNow series and one-off titles Hunters tHunted, Fantastic Facts, Gross Facts, The Book of the Sun and the Stars, Festivals, Parties and Celebrations from around the World, and Community.