He was also the founder, drummer, keyboardist, and backing vocalist of KillMatriarch (2010–2012) and currently is working on his solo project, OnTronik.
In 1997, after spending three years with System of a Down, Khachaturian had to leave the band due to an injury inflicted while practicing Jeet Kune Do after punching a hole in the wall and breaking every bone in his hand.
In 1998, Khachaturian, with Art Karamian, David Hakopyan and Sammy J. Watson, decided to form the band The Apex Theory, bringing to market two music albums and an EP.
[3] After leaving The Apex Theory, Khachaturian formed a rock band in 2004 with a group of friends, called VoKee.
[4] In 2012, the band disbanded and currently, Khachaturian is working in Los Angeles on his OnTronik solo project.