Capital's Marvin Humes looked SICK backstage at the first night of Monster Mash-Up in Liverpool... This image appears in the gallery:#MonsterMashUp 2016: ALL The Photos From Last Halloween's BIGGEST Party 71. Capital's Marvin Humes looked SICK backstage at the first night of Monster Mash-Up in Liverpool... (Pic: PA) 77 images See the full gallery: #MonsterMashUp 2016: ALL The Photos From Last Halloween's BIGGEST Party