Shavo Odadjian ( born April 22 1974 , Yerevan , Armenia as Shavarsh Odadjian ) was the bassist for the Armenian American-based alternative metal band System of a Down and now Dj and vocal of Achozen . Shavarsh `` Shavo '' Odadjian ( born April 22 , 1974 in Yerevan , Armenian SSR ) is an Armenian American songwriter , multi-instrumentalist , music video director\/editor , music producer , and artist\/painter .