What people don't understand is that Vandalieu (Van) had been seriously screwed up due to all of the experiments that have been done on him which had caused him to become emotionally impaired. He understands most things and does not lose his common sense or become like a child its just that he goes kind of crazy at times due to the trauma he suffered, but that is fixed thanks to his mother as with the care she gives him he becomes somewhat reliant on her kindness which makes him a cute character and it leads him to become somewhat fixed, but he still ends up making decisions based on his emotions. And then he really only sees people as enemies, family, friends, and people he doesn't about. Well, its a lot more complicated than people make it out to be. Its interesting and to say that the character development is stupid really doesn't make sense to me.