Born in Bettendorf, Iowa, this was where Greg spent the first eighteen years of his life, which he says explains many things.
Greg began his illustration career in 1983. Greg has worked on many Children's books including I Know the Moon, Halloween (both of which received Society of Illustrators Silver Medal Awards), and Nothing But Trouble: The Story of Althea Gibson (which won a 2008 NAACP Image Award). As a Visual Development Artist Greg has worked on several feature films for Blue Sky Studios: Ice Age, Robots and Horton Hears a Who! and is currently helping to develop future films.
Greg has his own way to paint colours (he uses salt), and his painting in Sketchtravel is a reflection of his talent : a cowboy is riding a huge rabbit, bringing the sketchbook from San Francisco to Paris.