I read all three volumes of Chip Zdarsky's The All-Nighter in pretty short order, so apologies if I get the events of each book a little overlapped! The basic premise of the series is that stories have the power to create the creatures they discuss -- Dracula came into being for real thanks to Bram Stoker, Frankenstein's monster due to Mary Shelley, etc. They remember their fictional pasts, but they've also lived on since then. And there are, of course, rules. They must not reveal themselves, or The Takers come.

So there's a bunch of vampires running a diner, appearing only at night, and trying to fake that they're just humans to avoid a run-in with The Takers. This isn't always a very satisfying life, though, and one of them (Alex) ends up giving into his urge to show off his strength and power by playing the hero and rescuing someone. It turns out to be a loophole: he can pretend to be a superhero, instead, a vigilante hero who works at night, Batman-style...

And obviously things go wrong. There's a found-family situation at the diner and of course they get dragged into it, though most of them (other than Joy) aren't fleshed out much in this first volume, which makes it a bit more difficult to care about that.

In the end, they all come together to solve the mess Alex has caused as all kinds of creatures come out of the wordwork using the same loophole of superheroes and supervillains... but obviously the genie can't be put back in the bottle.