[RStar]

That's true, Sayer and Kate are the two people he is the closest to. And he kept yelling "Where are my family, my friends?" at first.

And I have a feeling that the will never succede in getting Jack to join them 100%, if that is what they are trying to do. He may play like an other for a while to figure them out. But I'm sure the writers would realize that it would'nt be that interesting for him to become an other.