A Vanisher is an elf with the special ability to let light pass through their bodies. This allows them to turn invisible. Gnomes, however, can still see them because of the pollen and dust that settles on them. This excludes Biana and Alvar who figured out a way to hide. Vanishers sometimes do not even realize they blink in and out of sight as they move. Alvar uses and has used his vanishing ability to kidnap people (including Sophie and Wylie) for the Neverseen.