Every season on Game of Thrones, a few characters go missing. Sometimes they’ve just wandered off, to return soon. Others may have been shelved, postponed, or worse, forgotten. But what about the characters who could be living very full lives offscreen, and whose absence is conspicuous? Will we perhaps get a chance to glimpse them in season six? If we could put out the Westeros version of an APB, it would be for these folks. Have you seen …?