Uncharted Island

We went to see The Dark Knight this afternoon, apparently along with half the population. I was a bit surprised to see that Richard Alpert was the Mayor of Gotham City. Not only was he wearing his trademark eyeliner, but he also survived an assassination attempt. Surely this proves that Richard Alpert, under his assumed name as mayor, is immortal and able to travel through time, space, and alternate realities. Does this mean that the rest of the Other inhabitants of the LOST island are going to show up, possibly as Batman villains?

*snicker*