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.
Bloodstock Open Air 2017 Aug 11 - 13, 2017 Walton-on-Trent, UK Uploaded by Josh King
Vagos Metal Fest 2017 Aug 11 - 13, 2017 Vagos, Aveiro, Portugal Uploaded by La666
Bloodstock Open Air Festival 2017 Aug 10 - 13, 2017 Derby, England, United Kingdom Uploaded by Jason French
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