 Mark starred as the host Commander Mark an enthusiastic space man teaching drawing techniques to viewers at home and the on-screen characters Zebtron, Metaman and Cindy the Dragon.The show was broadcast to 11 million PBS viewers each week far surpassing his original one million student goal.His art style is a cartoon 3D style that is focused on basic drawing techniques such as foreshortening, shading, surface, size, overlapping, contour, and density.