Ripper

n.	1.	One who, or that which, rips; a ripping tool.
	2.	A tool for trimming the edges of roofing slates.
	3.	Anything huge, extreme, startling, etc.

Noun

1.

ripper - a murderer who slashes the victims with a knife; "Jack the ripper was probably a madman"

liquidator, manslayer, murderer