Frankenstein's monster

Something that harms or destroys its creator and cannot be controlled. A reference to the monster in the book Frankenstein by Mary Shelley. At first, my side business seemed like a good idea, but it has turned into Frankenstein's monster, eating away at my time and finances.

Common Names:

Name	Pronounced	Usage
Manley	['mænli:]
Dafina	-	Albanian, Macedonian
Maura	['mɔ:rə]
Helmine	-	German
Doubravka	-	Czech
Santo	SAHN-to	Italian