The Return of Chorb
The Kellers are not likeable folk. They’re stuffy, easily angered, and all around not the life of the "Chorb" party. They’re also a pain in our protagonist’s you-know-what, since their impending arrival at the hotel threatens to disrupt the completion of Chorb’s weird recreating-the-past mission. They may not be the most flagrantly antagonistic villains you’ve ever encountered, but they get the job done.