Grump Master Flex has seen 94 bands.

Band Concerts Seen
  Halestorm 3 concerts
  Hollywood Undead 3 concerts
  Seether 3 concerts
  A Day To Remember 2 concerts
  All That Remains 2 concerts
  Avenged Sevenfold 2 concerts
  Bullet for My Valentine 2 concerts
  Dropkick Murphys 2 concerts
  Jon Pardi 2 concerts
  Kevin Fowler 2 concerts
  3 Doors Down 1 concert
  Adelitas Way 1 concert
  Anthrax 1 concert
  AWOLNATION 1 concert
  Baby Metal 1 concert
  Bad Religion 1 concert
  Bad Wolves 1 concert
  Bayside 1 concert
  Big Sean 1 concert
  Blacklite District 1 concert
  Black Stone Cherry 1 concert
  Black Veil Brides 1 concert
  Body Count 1 concert
  Boston 1 concert
  Brad Paisley 1 concert