Chris Vrenna (Vrenna) a.k.a. Podboy, Chris Alan Vrenna, born on February 23, 1967, in Erie, Pennsylvania, USA, is an American musician, Grammy-winning producer, engineer, remixer, songwriter and programmer. Vrenna was a drummer for the rock bands, Nine Inch Nails, (1989 -1997) and Marilyn Manson (2004 - 2011). He has been credited as an engineer for The Smashing Pumpkins, U2, Nine Inch Nails, Gary Numan, Scar the Martyr, David Sylvian, Mudvayne, Lords of Acid, God Lives Underwater, Megadeth, Rammstein, Metallica, The Rasmus, Weezer, etc.