Burton Ortega joined reunited Oakland, California thrashers Defiance in February 2010. He replaced previous sticksman Mark Hernandez, who left Defiance in 2009 to concentrate on his primary band, Forbidden.
Burton Ortega made his live debut with Defiance on March 13 in Modesto, California at the Pizza Factory.
Prior to joining Defiance, Burton Ortega drummed in Kaos. He left in 2009.