Sergio Vega is an American musician. He is the bassist of alternative metal band Deftones, and post-hardcore band Quicksand. In 1995, Quicksand disbanded, although they reunited again in 1997 to tour with Deftones. After this tour, the band desired to write a follow-up to their second album Manic Compression, although tensions between bandmates caused the band to split up again, until June 2012 when another reunion was announced. Vega began playing for Deftones since 2009, replacing Chi Cheng after Cheng was involved in a car accident which caused him to enter a semi-conscious state in November 2008 and led to his eventual death on April 13, 2013. He has appeared on four albums with Deftones: Diamond Eyes (2010), Koi No Yokan (2012), Gore (2016) and Ohms (2020).