Wyche-kin are separated into Corporeal, Non-corporeal and Greater. Non-Corporeal Wych-kin, made of energy or ectoplasm, are the most common and thus the most immediately dangerous. Many Corporeal Wych-kin are contained within the body or bodies of living people or animals. Some, such Cradlejacks, reproduce via bites and scratches; anyone cut or scraped by one of these Wych-kin will turn into one themself. Their true forms, if they exist, are unknown. These are the rare, but the easy to defeat, as they can be killed in conventional battle. Other Corporeal Wych-kin, such as Rawhead, have their own bodies and generally exhibit greater magical power.