Sonny John Moore (born January 15, 1988), known professionally as Skrillex, is an American electronic dance music producer, DJ, singer and songwriter. Moore joined the American post-hardcore band From First to Last as the lead singer in 2004, and recorded two studio albums with the band (Dear Diary, My Teen Angst Has a Body Count, 2004, and Heroine, 2006) before leaving to pursue a solo career in 2007.
Moore began performing under the name Skrillex in 2009, distributing the My Name Is Skrillex EP for free download on his official MySpace page. Subsequently, he released the Scary Monsters and Nice Sprites EP in late–2010 and More Monsters and Sprites EP in mid–2011.
Skrillex has collaborated with Diplo to form the group Jack Ü, and with Boys Noize to form the group Dog Blood.