Anything that does not include the Waynes going down a scary alley, for starts. It's a whole neighborhood, not an alley, dammit.

After that Leslie Thompkins has to be present first as the comforter. Alfred can come later, Gordon optional, since I haven't decided if he should be on the other side of town shooting Wrath's parents or we can move that scene sometime later.

For Batman, the ones that start with low tech, since he's alone, Alfred optional, Lucius optional. So not Zero Year, but I also want it to be cool enough that he doesn't potentially break his back because of the grapple malfunction, even though it's realistic, so no Earth One either.

What's the difference between Zero Hour and Year One?