Well, I've not heard of it, but that doesn't say much. From what I've been able to tell, pretty much all of us who are from Earth are from different versions of it.

[He smiled, figuring that tidbit might at least be a little bit comforting. It had been for him: for all anyone else knew, it wasn't unusual for his version of earth to have nonhumans running about, and Haise's reactions had really driven home that he must be in a similar boat.]

I take it ghouls were the bad guys? That's not really a term for anything we have back home, either.