Willem Ritstier
Willem Ritstier is a Dutch illustrator, cartoonist, and one of the most productive comics scriptwriters of the Netherlands, based in Oud-Beijerland. Ritstier's cartoons and illustrations have appeared in Algemeen Dagblad, De Telegraaf, Leeuwarder Courant, calendars for Lannoo, and a number of publications for corporations like KLM and Philips. He additionally makes illustrations for children's books and advertisements, sometimes using the pen name Bill Risty.