A.J. Pero, who is probably considered by most fans to be the definitive drummer for Twisted Sister, has passed away at age fifty-five. He also replaced Mike Portnoy in Adrenaline Mob in 2013.

The band broke the sad the news via Facebook earlier today:

No additional details are known at this time.

Thanks to his contributions to songs like “I Wanna Rock,” “We’re Not Gonna Take It,” and “Burn in Hell,” Pero’s place in metal history is assured. This band has been a cultural force, and Pero leaves behind a legacy of which any musician would be proud.

Our thoughts are with Pero’s family and friends during this difficult time.

[via Metal Underground]