So I am reading a lot of older stuff like 60s and 70s justice league 70s Brave and The Bold and 60s Batman. In those stories Batman does not have an edge. he Shares that he is Bruce Wayne with anyone in a mask, he works with the police and even in a couple of issues lets himself be arrested, he even throws puns at the bad guys. So when did Batman change to the dark Batman that he is in later stories. And why did they do the change?