In "Batman: The Long Halloween - Part One", the story follows a multi-issue comic art that integrated the pursuit of a criminal called Holiday (which definitely has shades of Rorschach from Watchmen"). But the psychological aspect that plays most readily is that Batman can be wrong.

While much of "Soul" runs along comedic bounds with a sense of play, it is when it is in the ether world that it truly shines. This has much to do with the design as the ideas. The way certain things are visualized shows the perspective of what is being shown.