Matt Montgomery (born 16th November 1975, in Houston - Texas) also known as Piggy D. is a musician most famous as a guitarist in Wednesday 13 and bassist for Rob Zombie. Ex - Dementia 13, Spunk, Woody, The She Demons (1994-1999), Amen (2002-2004), Wednesday 13 (2004-2006) and currently bassist for Rob Zombie since 2006.

Piggy D. is an independent musician and had his first solo album, " The Evacuation Plan'' ,debuted in the summer of 2007. Currently he has a project with the English singer, Shannon Gallant, called The Haxans. They've released two singles, ''Cold Blood'' (2012) and ''Black Cat Bone'' (2012). He's also a director, producer and designer and has his own label called ''Black Victory''.