[Rausch]

Originally Posted by Third Eye

Spoiler!

How do we "know" he has 4 personalities in his head. By my count, we only know two. I think it's fairly obvious that the Seinfeld fan is a manifested personality, but we don't yet know that for sure. I don't think Tyrell is. I think that's a red herring. I'll admit the possibility that he was killed and moving forward the Tyrell character will be one of Elliot's personalities, but I don't believe it. I think there is a strong chance that WhiteRose is Elliot, but again, certainly not known.

We know he has 3.

HE HAS 3.

My argument is he has more than that.

Spoiler!

If this follows much of the same story as Fight Club (and there's no reason to suspect it won't) he'll continue to express each desire/motivation as a personality.

He is Tyrell. He is the blonde girl. He is his sister.

All are possible.

My guess is he limits our humble narrator to one personality for the ID, EGO, and Super-EGO...