I have bipolar disorder, and I have other me's. They don't have distinct names, genders (other than mine), ages (except maybe one, but she very obscure and I only found her recently). There is a manic-me, an ocd/depressive-me (no one likes her), a logical-me (I would guess the dominant one, and a beautiful, innocent, happy-go-lucky child-like me (she is the obscure one, she never talks, but does come out to play with logical-me on occasion).
Perhaps they are my bipolar, or perhaps not. I haven't quite figured that out. The for the most part stay resident and converse with me and each other in my head. Sometimes I have to threaten them to get them to stop bickering. I do sometimes refer to myself in the plural when speaking of everyone in my head. I always thought that was normal, until the night I had to threaten them to get them to shut up. I do not know what is "wrong" with me, but I am fairly confident I do have bipolar and OCD, DID would be questionable. I would prefer to have nothing and be NT, but I don't have that choice (much like most people here). So, I am content to at least identify what is wrong with me so that I can begin the path towards and somewhat NT existence.
With a correct diagnosis, you can at least get the help you need and not let what is "wrong" with you continue to hinder your life (or at least that is what I keep telling myself)...
Good luck...