Board Thread:Theories/@comment-32448995-20170701142908/@comment-27938131-20170701155745

I think he initially hated them due to Marley's brainwash but living with them made him understand that they weren't the evil people depicted by the government propaganda and genuinly became friend with them.

But since he needed to fulfill his mission to give his mother and him Marleyan citizenship he may have decide to destroy them anyway. So the split personality is an interesting symptom of his contradictions.

I suppose (and hope) that now he is back in Marley there is no dual personality thing and he is more honest with himself. My guess is that by now he still thinks he has a mission but admits that his trainee days were good - probably better than his warrior cadet's - and that Eren & Co were his friends but because of how their world is they can only be mortal ennemies now.