Występy gościnne Wear the Mark – Thrown to the Wolves (?), w utworze "Sacred Ground" Throwdown – Haymaker (2003), w utworze "Nothing Left" Agnostic Front – Another Voice (2004), w utworze "Another Voice" A18 – Dear Furious (2004), w utworze "Beating A Dead Horse" Internal Affairs – This is For You (2004), w utworze "When Tigers Fight" (cover Alone In A Crowd) Wear the Mark – Thrown to the Wolves i B Sides Can Suck It (2004), w utworze "Sacred Ground" Wear the Mark – Thrown to the Wolves (2006), w utworze "Sacred Ground" Teamkiller – Bad Signs (2006), w utworze "Over & Out" Jedi Mind Tricks – Servants in Heaven, Kings in Hell (2006, limitowana edycja), w remiksie utworu "Heavy Metal Kings (Terror Remix)" Against – Loyalty and Betrayal (2007), w utworze "Against The Grain" World Collapse - Deutschland! Deutschland! Into The Night (2007), w utworze "The Second Life" Nueva Etica – 3L1T3 (2008), w utworze "Nunca Seran" Stick To Your Guns – Comes From The Heart (2008), w utworze "Part Of Me" Uprising A.D. – Uprising A.D. (2008), w utworze "To Survive" Mr.