Class 1 (Earth-8591)

A Class 1 Entity is the lowest class in the CDI system.

Overview
As per the CDI system, Class 1 entities are undeveloped and insubstantial entities that are near invisible to the human eye. Their interaction with the surrounding environment, including the living, is very limited and ellusive in nature, consisting of phenomena such as voices, ectoplasmic vapors, among others. A single proton pack beam is enough to dissipate a Class 1.

Entities

 * Book Bats
 * Dead Fish Fliers
 * Echos
 * Flying Skulls
 * Kitchen Fliers