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
Darnell	dahr-NEL	English
Hayden	HAY-dən	English
Cristen	KRIS-tən	English (Modern)
Adrian	AY-dree-ən (English), AHD-ryahn (Polish), AH-dree-ahn (German), ah-dree-AHN (Russian)	English, Romanian, Polish, German, Swedish, Norwegian, Danish, Russian
Cahyo	-	Indonesian, Javanese
Dorcas	DAWR-kəs (English)	Biblical