You do realize that Larian hasn't said anything one way or the other about there being other companions, right? At least, not as far as I can find.
I had heard that each writer was going to be writing a character, and that there were 12 or 13 writers in total? I don't remember where I first saw that but I've seen it referenced by various people online. I could be wrong though but I hope it's the case.
