A female served as the queen of Ktath'atn. One day of each year, the queen would see visitors and grant favors in exchange for receiving the galaxy's most interesting oddities which she feasted upon the life energy of along with those of her subjects on the planet. Doctor Aphra traveled to Ktath'atn with Luke Skywalker to visit the queen and get her to activate an ancient Jedi artifact, which contained the personality of a Jedi named Rur.
- The Screaming Citadel, Part I (First appearance)
- Star Wars 31: The Screaming Citadel, Part II
- Doctor Aphra 7: The Screaming Citadel, Part III
- Star Wars 32: The Screaming Citadel, Part IV
- Doctor Aphra 8: The Screaming Citadel, Part V
- Doctor Aphra 9: The Enormous Profit, Part I (Mentioned only)