(Namespace: plural glossary)
| Type of term | Possible type of headmate |
|---|---|
| Synonyms or near-synonyms | Core, host, self |
| Antonyms or near-antonyms | Alter, facade, fragment, introject, part, thoughtform |
An original is a headmate who has inhabited the system since the body was born, or is otherwise chronologically the eldest system member. Some systems may have more than one original, or none at all. An original may be, but is not always, the core and/or host.