Chris Vrenna
Chris Vrenna is a U.S. musician, and is a former drummer for Nine Inch Nails. He is currently recording under the name Tweaker. Albums done under this name are The Attraction to All Things Uncertain and 2 A.M. Wakeup Call. Vrenna has also done soundtrack work for video games like Doom 3 and American McGee's Alice.
He can be seen performing in the music videos for the songs "Gave Up", "Wish", and "March of the Pigs" on the Nine Inch Nails video compilation Closure, and also makes brief appearance in "The Perfect Drug" video.
Vrenna was chosen to take over the drumming responsibilities for Marilyn Manson after Ginger Fish (Manson's current drummer) was injured.