Favorite fictional bat species?

I like Swoobat from Pokémon. It's a nice loving type of guy. During courtship a male Swoobat produces waves that uplifts anyone hearing the waves. Also it sleeps upside down from its tail, not its feet. Its color scheme is nice - in the artwork at least, other sources have it take on a greenish hue instead of the nice blue shown. It's pretty interesting.

So, what's your favorite fictional bat species?