- You may also be looking for Source:Changeling.
Changelings are usually metahumans that have aberrant metagenetic traits (however, members of non-metahuman species can also mutate into changelings). Changelings are neither a race nor a metavariant. Each is a unique “a freak of nature”.
Changelings are categorized as Class I, II or III depending on severity of mutation.
- Runner's Companion, 57-58