I love the model of the Terrorgheist, but its inclusion in the Vampire Counts army years ago did pose me with a problem as a person who appreciates background: what does a living version of this creature look like, and where does it come from?
Exisiting background says it's a bat the size of a dragon that lived off caravans and pegasi.
But where would a bat of that size even live in Sylvania? And are there even enough of them to reliably field them in armies?

Am I thinking about this too hard?