Supervillains and Philosophy, a collection of essays edited by Ben Dyer.
I've gotta say upfront that the book was a lot of fun. But I've also gotta say that I can't really recommend it to others - unless your mind is warped in a way very similar to mine.
Books like this, which take some aspect of popular culture and then add "and philosophy" to the title can work in two ways. They can examine the philosophical assumptions that seem to be implicit in cultural practices, perhaps challenging them, or exploring the cultural significance of what is going on. Often we get essays like this, from people playing the role of philosophically-informed cultural critic.
More often, however, the idea is to use whatever aspect of popular culture it might be (supervillains today, American sitcoms tomorrow) as a way of illustrating philosophical issues, or as a springboard to philosophical thinking.
Supervillains and Philosophy contains essays of both types, but as is usual with such books the emphasis is on the latter. The idea here is to use an amusing aspect of popular culture as way to introduce philosphical ideas; it's not to examine the cultural significance of supervillains or supervillain narratives.
Some books of this kind get into fairly sophisticated philosophical discussion, but that doesn't happen so much in this particular case. Although there are some good pieces that make deep points, most play around too much in the shallows. As an idiosyncratic matter, perhaps, I was especially unimpressed and annoyed by an essay on metaethics that ends up endorsing moral objectivism after offering very weak criticisms of what it calls "moral nihilism" - essentially moral error theory. The latter is presented in a simplistic form, and it is criticised largely for being counter-intuitive, i.e. it goes against all the objectivist assumptions that seem to be built into our moral thinking and discourse. But of course, that's exactly what error theorists claim; they argue that our moral thinking and discourse are riddled with objectivist assumptions that are untrue.
So again, a bit of fun, but you'd be better off putting your hard-earned loot towards, oh, I dunno, maybe this book. :D