Mark Spicoluk
 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 co-production credits on albums by artists such as Protest the Hero Abandon All Ships Stereos and DVBBS.