Subspace Demons, by nature, are a type of spiritual lifeform, broadly classified as 'Ethereal,' a unique life that mainly appears in the Domain of Void but is also distributed in the physical world.
According to the data given by the Cradle of Twinkling Light and the Silver Chip, Subspace Demons are just a well-known branch within this outline, like cockroaches among insects. Although there are countless types of insects, when discussing pests and disliked insects, most people think of cockroaches first.
Subspace Demons are the most infamous category among Ethereals.
Most demons lack a physical body, existing in the form of a Spirit Energy Soul, a conglomerate of thoughts, within the Domain of Void and subspace. Because they prefer to live in disorder and chaotic, collapsing environments, they are more common in subspace, hence the name.
