"Campbell Mark Swan."

"If you're from a parallel world with no previous contact with this one, how come you have an Anglo-sounding name?"

"That's what's tripping you up, not the fact that I look like a human with some aftermarket modifications and not like a bug alien or something? My world's got English. I'm from its United States."

"So it's an infinite void that has parallel versions of specific Earth countries?"

"No, it's more complicated than that, do you actually want me to improvise the 101 lecture on the spot?"

"At this point I'm mostly just killing time until Records get back to me about the security footage or Phil comes back with the glass ornament. I don't currently see the need to demand a 101 lecture on Hell as part of investigating your alteration with Lewis, but I don't have anything better to do with my time while I wait than learning about it."

"So you've got the parallel Earth, with at least some parallelism of countries and languages though I haven't been here long enough to say how deep it goes. People from that parallel Earth, when they die, go to one of four afterlives - the boring default one and three where they turn into more interesting magical beings in the process. There are also native magical beings who didn't use to be humans. I am from one of the afterlives for a value of 'from' where I'm dead and used to be from the United States; us magical beings can be summoned."

There is a ding from the computer and the sheriff starts to look at its screen and do something with its controls.

"Records have confirmed that there are no records of you on the station prior to your suddenly appearing on the mosaic"

"Yep, that would be because of the summoning. Further demos? Questions? Am I compliant with the dress code? Can I get anybody a beverage?"