The Writer's Block is a personification of a lack of ideas. Its appearance is that of a block with cat ears, paws, and tail with its name on the side. It appears in filler comics to torment Dan (the character) when Dan (the author) is suffering from writer's block, though it has also appeared once in the main story, if only in Susan's mind. For the most part, Writer's Block acts like a cat, though it moos as well as mews, and only eats plain veggi burgers. It has made 14 filler appearances...