Becuase it's just supposed to be 'Gus' as in the name. It means a depressing or generally pessimistic and reserved person.
this. its just a random name used sometimes when referring to a person. like "Negative Nancy" isn't literally talking about a person named Nancy its just a thing people say
...I only knew two of these, huh. The more you know.
This Great Library is such a nice place.Alright, just because it's true doesn't mean you get to say it.Remi x PatchyIt feels just like a place a gloomy Gus introvert would live; it's really relaxing.