Demon

Demons are an unknown class of entity which manifest in the area in and around 78 Green Road. Demons are thought to be malicious spirits or otherworldly entities inhabiting this plane to test, or interfere with, the lives of the The Residents. Demons are numerous and well documented, yet their persistence, variety, and varying levels of harm were a cause of huge strain to the The Residents of the house.

Description
Demons may present themselves in literally any number of ways. Due to this massive variety, it is impossible to define any concrete traits shared between all Demons. However, there are some vague approximations which have been made to aid in their classification. Note that a Demon may exhibit none of, some of, or all of the below characteristics. With Demons, nothing is definite, e.g., the Demon of Desire does not follow any of the below traits.
 * Malicious intent
 * Non-humanoid (Most often manifesting as a presence)
 * Causes inconvenience
 * Often requires outside intervention to quell

List of known Demons

 * Käl-Ver
 * Demon of Desire
 * Sperren Door
 * Ünter Sin-Ken