Fratz is the place/location/plane that Demons like Scratch, Chauncy, and Edgar come from(). It is a different place from Zark, although Demons come from both places().
Fratz is a dangerous place. Even remembering a personal name() it too much effort to spare from stay alive.
The word Fratz is also used as an expletive(), sometimes in an ironic manner (such as when discussing a wine bottle() containing() Chauncy, and Edgar).