Marvin Humes kicked off the first Monster Mash-Up with a kick-ass set! This image appears in the gallery:#MonsterMashUp 2016: ALL The Photos From Last Halloween's BIGGEST Party 63. Marvin Humes kicked off the first Monster Mash-Up with a kick-ass set! (Pic: PA) 77 images See the full gallery: #MonsterMashUp 2016: ALL The Photos From Last Halloween's BIGGEST Party