Rob Halford (Judas Priest)KK DOWNING (Judas Priest) Adam D (Killswitch Engage) Dan Donnegan (Disturbed) Shannon Larken (Godsmack) John 5 (Rob Zombie) Drowning PoolMichael Wilton (Queensryche) Nick Oshiro (Static X) Sebastian Bach (Skid Row/Solo) Jason Bittner (Shadows Fall)Blasko (Ozzy) Piggy D (Rob Zombie) Tommy Vext (Diven Heresy) Metal Sanaz Bullet for my Valentine Maria Brink (In This Moment) Dez Farfara (Devil Driver / Coal Chamber) Chuck Billy (Testament) Rob Dukes (Exodus) Ivan Moody (5 Finger Death Punch) Evil J (Otep) Mark Rizzo (Soulfly) Roy Mayorga (Stone Sour) Matt Byrne (Hate Breed) Clint Lowery (Sevendust/Dark New Day) Vinny Appice (Black Sabbath) Johnny Kelly (Type O Negative) Spider (Powerman 5000) Joey Belladonna (Anthrax) Glen Tipton (Judas Priest)Vic MendozaJerry (Mindset X)Doug Carter (Pulse 8)Chris Taylor (Vegas Temper)Mistress JuliyaShawn Fletcher (Windowpain)SevendustAshes of Your EnemyStemmAmy Sciaretto (Road Runner Records)George Valley (Century Media Records) Jeff Battaglia (Disturbed's manager) Ronny Munroe (Metal Church) Kurt Vanderhoof (Metal Church) Joey Belladonna (Anthrax) Blake Bunzel (In this Moment) Chris Taylor (Vegas Temper) Jay Vaz (New World Horror) Janie Lane (Warant)Stitch (Mushroomhead) Dave Linsk (Overkill) Missy B (Q) Tim "Ripper" Owens (Iced Earth/Beyond Fear) Lorenzo (Sworn Enemy) Ben Carrol (RA) John Kosco (Dropbox/Saint Caine)Jodah (Stemm) Dave Ellefson (Megadeth/F5) Pervez (Living Syndication)Mike & Mitty (Till We Die) Enio (Haloburn) Coopa (Hour-past) Adam Powers (Twisted Roots) Travis Meeks (Days of the New) Acey Slade (Dope/Murder Dolls/TLV) Justin Pace (VT/Shannon Corey band) Shelby Carcio (Era for a Moment) Julie Wedlake (Hydrogyn) Henry Kiev (Mortis Deveia) Kevin Shormann (Ashes of your Enemy) Darrell Roberts (Five Finger Death Punch) RC Chiec (Belladonna) Jerry Montana (Hell Yeah Studio Bassist) Riggs (Scum of the Earth/ex Rob Zombie) Erin Ludwig (Sinaria)Meliah RageSkitz (Deconstruct)Chris Poland (Eclipse Records)