Being chased by ancient mummies is nothing new to the Scooby Gang, having encountered such bandaged monstrosities in the original series episode titled “Scooby-Doo and a Mummy, Too,” and more recently in the episode “Mummy Scares Best” from the 2002 to 2006 series What’s New Scooby-Doo? But what Scooby-Doo in Where’s My Mummy? mostly owes its existence…