Prior to Arvizu's time in
Korn, he and
Brian Welch, who would later become one of Korn's two guitarists (alongside
James Shaffer), had played together in a number of bands, having become friends while still at school. Upon their graduation from high school, Arvizu, Welch, Shaffer, and drummer
David Silveria relocated from Bakersfield to Los Angeles and Arvizu, Shaffer, and Silveria formed
L.A.P.D. (the name first stood for "Love and Peace, Dude", but this abbreviation was later changed to "Laughing As People Die"). Although L.A.P.D. did succeed in signing a record deal, their success was limited until the band hired singer
Jonathan Davis and changed their name to Korn. The name "Fieldy" is said to have come about as an inside joke. Originally, his bandmates called him "Gopher", due to his large cheeks. Gopher quickly became "Gar", Gar became "Garfield" (based on the
comic strip character of the same name), and eventually "Gar" was dropped and a "y" was added to "Field", which became Fieldy. In August 2012, it was reported that Fieldy would be taking a brief break from Korn as his wife Dena was expecting a child. Korn began touring through Eastern Europe, Russia and India throughout August and September 2012 with fill-in bassist
Ryan Martinie from
Mudvayne. On June 21, 2021, Fieldy announced that he would not be accompanying Korn on their upcoming tour, later taking an indefinite leave of absence from the band. In a Facebook post to fans, he stated: In May 2025, Fieldy stated that he hadn't spoken to Korn since 2019 and doesn't anticipate reuniting with them anytime soon. In April 2026, during an appearance on the
Shady Characters podcast with former L.A.P.D. bandmate Richard Morill, Fieldy offered further insight into his departure from the band, stemming in large part from the
COVID-19 pandemic and his decision not to get vaccinated. Fieldy further went on to address his potential future with Korn, saying: ==Life outside Korn==