Personality wise? Matres would say he has none. He has no emotion, everything he says is based off of logical experiences he had while serving his purpose. You used to have a personality, but he got ride of it because his purpose didn't require it. He may say things that correspond as an emotional response but there is all logic to it. He may tell dark matter that he doesn't like him. It is true, but he doesn't hate home either. It is logical. He has no feelings.