Sackhead is a brutal monster in the Larkill Manor mythos. He has appeared in two forms- the first of which is as a main antagonist in the first Larkill Manor book. In this incarnation, he stalks the main character, Seth relentlessly through the Manor during the later part of the story. Here, his main weapon is a bloodied, rusted chef's knife, much like the one that Seth obtains early on in the story. His second incarnation is in real life as a monster that roams the halls of the Larkill Manor haunted house. This version of Sackhead lacks his chef's knife, but he retains the bloodied burlap mask for which he is named.