[quote=@FrozenEcstasy]
Batman has always been Neutral Good, unless you talk about alternate-timeline Batmans.

And the Alignments aren't really as outdated as they are misunderstood. Good does not mean good and evil does not mean evil in their case. Kind of complicated in their theory, it's best not talk about them and just make sure our characters don't all act like crazy heathens. 
[/quote]

Have you read Batman stuff made by Miller? Thats where Batman gets the more evil sides from. xD. If you don't wanna read them, I think Linkara or Comicstorian or Comics Explained goes over how psycho he is pretty well.