Board Thread:General Discussion/@comment-6192846-20130929130231/@comment-6192846-20140709184445

I think I figured out what the "Babul Desert" is supposed to be referencing.

It's spelled as バーブル (Baaburu) but if you change the spelling slighty, it becomes パープル (Paapuru), meaning "Purple".

Considering Asmodean's associated with Venomania (ie, Gackpo), and their primarily associated with the color purple, I think it's a good chance mothy used a word play for its neighboring desert.