Porter's nickname "Paintergeist" comes from his love of art. He loves painting anything and everything, and when inspiration strikes, he wastes no time in finding the nearest canvas, usually a wall, and painting an image in ghost paint. He hates ruining other people's property, so he only paints using ghost paint, which fades away after a while. Despite this, Porter's art constantly lands him in trouble with Principal Revenant, and he has accumulated more detention chains than anyone else in school. But he always remains upbeat and cheerful, always looking for his next masterpiece. Though sometimes coming off rude, he has a soft side and cares about his friends a lot.