Shaffer set up the side-project band Fear and the Nervous System in 2008 and is also the founder of Emotional Syphon Recordings, who have signed acts like Monster in the Machine and Droid.
Shaffer was ranked at No. 26 of Guitar World's 100 Greatest Heavy Metal Guitarists of All Time. Shaffer's work with Korn has resulted in over 35 million albums sold.
Shaffer first took up guitar as part of rehabilitation when he severed the tip of one of his fingers on the chain of his three-wheeler. He has since performed with several bands.
On February 22, 2005, Brian "Head" Welch left the band. Shaffer accepted his friend's choice and the two remained on good terms. When drummer David Silveria left the band, Munky said in an interview that he had a strong friendship with him and was very sad to hear that he had to leave.
On an interview about Welch's departure, Shaffer said he felt pressure, because they were always working together, writing songs, and creating albums. But when Welch left, he had to write all the guitar parts into one part, so Korn could play live, and he continued to play like that until Korn got a backing guitarist. Welch officially returned to the band on May 2, 2013 to work on a new album that was to be released in October.
On March 4, 2008, it was announced that Shaffer would be releasing a solo record on August 8, 2008 with his solo band Fear and The Nervous System which would feature Munky doing vocals and guitars, Brooks Wackerman of Bad Religion (who also performed on Korn's 8th album) on drums, Leopold Ross on guitars and programming, Bill Gould of Faith No More fame, and Zac Baird (Korn's keyboardist) on keyboards and programming. The record will be produced by Munky and Ross Robinson. Guitarist and friend Wes Borland originally recorded guitars for two songs on the album but they will not make the final cut. Borland also created cover art which will still be used. The band's debut album was originally due out August 8, but has been pushed back as the album has yet to be completed.
Recently on Modlife in October 2009 (Korn.com), Shaffer had explained that he would not be doing vocals on the new Fear and the Nervous System album because he is not "very good at singing." It was later announced that Steve Krolikowski of Repeater would be handling vocal duties.
In 2006, Shaffer founded Emotional Syphon Records to give daring and diverse bands a chance to be heard. The first bands to be signed were Droid and Monster In The Machine, however Shaffer says he does not want to limit himself to only releasing metal acts but to create a multi-genre label.
On January 15, 2000, Shaffer married Stephanie Roush. Together, they had a daughter, Carmella Star Shaffer (born on June 23, 2001). In 2004, Shaffer and Roush got divorced. Shaffer then started to date the Albanian American actress and model, Evis Xheneti in 2005. They were married on January 2, 2012, in Paris, France. They have two sons together: D'Angelo DraXon Shaffer (born on November 7, 2012) and Rocky Rebel Shaffer (born on August 20, 2015).
Shaffer predominantly uses Ibanez guitars, most often his signature model the Ibanez Apex 7-string model and Mesa Boogie Triple Rectifier & Diezel guitar amplifier. Like Brian did before leaving the band in 2005, he uses many pedals and effects to shape the distinct Korn sound. Munky describes his live pedal board as a "spaceship" because of the large, diverse quantity of effects he uses.With L.A.P.D.
1989 – Love and Peace, Dude
1991 – Who's Laughing Now
1997 – L.A.P.D (Compilation)
1994 – Korn
1996 – Life Is Peachy
1998 – Follow the Leader
1999 – Issues
2002 – Untouchables
2003 – Take a Look in the Mirror
2005 – See You on the Other Side
2007 – Untitled album
2010 – Korn III: Remember Who You Are
2011 – The Path of Totality
2013 – The Paradigm Shift
2016 - The Serenity Of Suffering
With Fear and the Nervous System
2011 – Fear and the Nervous System