A forest-dwelling spectre native to North America, the Hidebehind is named for its ability to contort itself in order to hide behind objects of all shapes and sizes. It preys upon humanoids, killing them by disembowelment, and only a witch or wizard is likely to be able to survive when faced with one (Pm).
- Isolt Sayre saved the Pukwudgie William from being killed by a Hidebehind.
- Mr. and Mrs. Boot mistook the Hidebehind for a Boggart. The Boggart banishing spell was ineffective against the creature, leading to their demise.
- Isolt and William were unable to save Mr. and Mrs. Boot, but did manage to defeat the Hidebehind and save their two boys, Chadwick and Webster.