There are at least four artists called Havok: (1) an American thrash metal band ; (2) a German death metal band; (3) a Swedish extreme metal band; and (4) an underground rapper.
These are photos from concerts where Havok played, so they may be of other bands that played the concert as well.
Suicidal Tendencies / Madball / Havok Oct 21, 2016 Grand Rapids, Michigan, United States Uploaded by Pathological Mastermind
Amon Amarth
Amon Amarth / Megadeth / Suicidal Tendencies / Metal Church / Havok Oct 7, 2016 Moline, Illinois, United States Uploaded by Cameron Klotzbach
Megadeth
Megadeth / Amon Amarth / Suicidal Tendencies / Metal Church / Havok Sep 22, 2016 Las Vegas, Nevada, United States Uploaded by Mike Ee