Alternative and post-grunge bassist. He played with the bands Breaking Benjamin and Stardog Champion.
Before joining Breaking Benjamin, he performed with a band called Lifer.
He was unceremoniously kicked out of Breaking Benjamin by the band's lead vocalist, Benjamin Burnley.
His birth name was Markus James Klepaski. All of his bands originated in Wilkes-Barre, Pennsylvania, where he was living in the late 1990s and early 2000s. His son Corey and daughter Kaya have appeared on his Instagram account.
He and guitarist Aaron Fink played together in Lifer, Breaking Benjamin, and Stardog Champion.