 Don't ask what kind of art she makes. One of the jokes is that no one really knows. Wendy started out as something of an alter ego for Walter Scott, a way for him to work out his feelings about being an artist. Now, after more than a decade together, Walter Scott is ready to step away from his most famous project. His new graphic novel, The Wendy Award, is out today. And Walter says this is going to be the last Wendy story for a long time. When I spoke with Walter, we talked a bit about how he manages to write about the art world