Faux Affably Evil: Oh sure, he'll say he wants to help the guests, offer them a place to stay, and calls the Guests "my friend/my dear," but he'll do it while breaking their psyches, swallowing human souls, and actively planning to feed them to his mother.
The Guest is the main character of the first two seasons, with everything seen from their eyes. The First Guest is a working man with a wife and son, and the Second Guest is a working woman who struggles with the decision of Career Versus Man.
Badass Normal: The Second Guest deserves this for the fact that at one point she, rather than just take Gregory's BS, picks up an ax and chases him off with it.
Downer / Bittersweet Ending: Neither Guest manages to escape the hotel, and returns to stay forever. The First Guest quite likely becoming Haniwa Salaryman, and the Second Guest becomes a member of Gregory's family.
Murder the Hypotenuse: In The Second Guest, she 's furious at the female guest for rejecting her brother, and believes Gregory to be her boyfriend...so she threatens to kill him if the guest doesn't date her brother.