Short answers, pulled from the story.
Korn was formed in 1993 by James Shaffer, Reginald Arvizu, David Silveria, Brian Welch, and Jonathan Davis. These five musicians came together from Bakersfield, California to create a new sound that combined funk, hip-hop, and heavy metal.
Korn released their self-titled debut album on the 11th of October 1994. The album peaked at number 72 on the Billboard 200 in February 1996 and was eventually certified two-times platinum by the Recording Industry Association of America.
Korn released their third album Follow the Leader in 1998 which debuted at number one on the Billboard 200 with at least 268,000 copies sold in its first week. The album was certified five-times platinum and sold almost 10 million copies worldwide.
Brian Welch announced his departure from Korn in early 2005 citing his addiction to methamphetamines and his desire to find a new path in life. He stated that church was his last shot to quit the addiction after trying everything else without success.
The current lineup of Korn features James Shaffer on guitar, Brian Welch on guitar, Jonathan Davis on vocals, and Ray Luzier on drums. Ray Luzier replaced David Silveria in 2007 and the band has sold more than 40 million records worldwide as of 2021.