Que Horrifico 312pages on this wiki Add New Page Edit History Add New Page Talk0 In the Online Game. Que Horrifico was a monster wearing a mayan mask, mexican pancho over wrappings which covers his pale skin. He can spookify kids and order them around. Thanks to the kids, he was caught, and was Freds tutor, Mary Anne Gleardan. Retrieved from "http://scoobydoomysteryincorporated.wikia.com/wiki/Que_Horrifico?oldid=5611"