Another Anomaly that has a close relationship with a specific Anomaly. These close relationships exist in multiple types, including appendages, evolution/devolution, variants, etc. Derivative forms need to be analyzed on a case-by-case basis depending on the specific Anomaly's circumstances. Some Derivative Anomalies, strictly speaking, are part of the main body which are unable to exist or function independently, while other Derivative Anomalies are new forms that the main body presents under certain influences. This transformation is not limited to changes in Anomaly characteristics; sometimes, it can even change the Anomaly Type or cause the Anomaly class to shift. The discovery order of multiple Derivative Anomalies with the same source body is refflected in their Anomaly profile number.