Mark Spicoluk is a Canadian musician, producer, music executive, entrepreneur and television personality. He is best known as the vocalist and bassist for the punk rock band Closet Monster and currently as a judge on YTVs The Next Star. He is also known as the founder of the indie record label Underground Operations, playing bass with Avril Lavigne and his production credits on albums by artists such as Protest the Hero, Abandon All Ships, Stereos and DVBBS.