"Program him with them? No. They're their own people. Their personalities are their own. Within a certain part of the AI community they can be pretty different, as colorful and unique as people, even if they do still have programs they have to follow some. But Theta's about as different from his brothers as I am from my twin."

So there you go, that's what it is. Theta who trusts people too easy, and who plays with the need to be depended on. Who was scared of what people might do to him, and who hated the darkness and being alone.

North got it. He loves it.