What is an introject alter? What is an original alter? An introject alter is an alter that has been brought into a system from an outside source, whether it be a person from real life or a character. An original alter is an alter that formed on their own without an introjection, meaning they don't come from an outside source, such as a person or media.

Fictives and factives are both kinds of introjects. But what's the difference? A fictive is an introject that comes from media, they used to be some kind of character and then became an alter. A factive is an alter that was originally a real life person and was introjected into the system. Something important to note about both fictives and factives and introjects as a whole is that they are merely interpretations based on the knowledge someone has.