Chris Vrenna (born February 23, 1967 in Erie, Pennsylvania) is an American musician, producer, engineer, remixer, songwriter, programmer, and founder of the electronic band Tweaker. Vrenna played drums for the industrial rock band Nine Inch Nails from 1989 until 1997, and was the keyboardist and drummer of the American rock band Marilyn Manson from 2004 until late 2011. As a member of Nine Inch Nails, Vrenna was inducted into the Rock & Roll Hall of Fame in 2020. Career Vrenna is a native of Erie, Pennsylvania. He graduated from McDowell High School in Erie, Pennsylvania in 1985 and marched in the Erie Thunderbirds Drum and Bugle Corps. Vrenna then moved to Chicago, quickly becoming a part of the Chicago industrial music scene and was briefly a member of Die Warzau and Stabbing Westward. He later reconnected with Trent Reznor, whom he met during high school in Pennsylvania, when they both were in local Cleveland, Ohio band the Exotic Birds. He also toured as a live drummer for KMFDM during the Money era tours, in 1992. He records under the name Tweaker, and has released four albums under that name: The Attraction to All Things Uncertain (2001), 2 a.m. Wakeup Call (2004), Call The Time Eternity (2012), and And Then There's Nothing (2013). Tweaker toured select North American dates with Skinny Puppy in 2004. As producer, remixer, or engineer Vrenna has worked with The Smashing Pumpkins, U2, Nine Inch Nails, Skinny Puppy, Gary Numan, Scar the Martyr, David Sylvian, Mudvayne, Lords of Acid, God Lives Underwater, Megadeth, Rammstein, Metallica, The Rasmus, Weezer, P.O.D., David Bowie, Slipknot, Cold, underwater, Scarling., Hole, Marilyn Manson, Rob Zombie, Green Day, Bush, Live, Adema, the Wallflowers, Dir en grey, Psyclon Nine, and others. He has also worked with the industrial group Pigface and produced songs and albums for underground girl groups TCR, Jack Off Jill, and Rasputina. Vrenna has also worked on music for several video games, including Call of Duty: Advanced Warfare, Doom 3 (as producer with Clint Walsh), Quake 4, American McGee's Alice, its sequel Alice: Madness Returns, Enter the Matrix, Sonic The Hedgehog, Area 51, and Need for Speed: Most Wanted. In 2004, he started soundtrack work on Tabula Rasa, a massive multiplayer online game. He also helped compose the theme song to the animated series Xiaolin Showdown. He can be seen performing in the music videos for the songs "Down in It",