Please don't take this the wrong way.
It is my personal opinion that if a "personality" is consciously created, it is not a true alter. Consciously creating a personality shows that you made a conscious decision to make a fictional persona into a delusion of fantasy. This consciously created "alter" sounds more like a delusion than an alter.
This being said, there are plenty of people in this world who utilize fantasy as a coping mechanism. It provides distraction from their reality and allows them to feel as if they are less alone in the world. But fantasy does not equal DID or vice versa.
This is my opinion.
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