Noelle Stevenson's "Nimona" is a great, lighthearted (but full-throated) serial fantasy webcomic about the complex relationship between heroes and villains. It's well into its ninth chapter, and is slated for collection in a graphic novel in 2015.
Lord Ballister Blackheart has a point to make, and his point is that the good guys aren't as good as they seem. He makes a comfortable living as a supervillain, but never really seems to accomplish much - until he takes on a new sidekick, Nimona, a shapeshifter with her own ideas of how things should be done. Unfortunately, most of those ideas involve blowing things up. Now Ballister must teach his young protégé some restraint and try to keep her from destroying everything, while simultaneously attempting to expose the dark dealings of those who claim to be the protectors of the kingdom - including his former best friend turned nemesis, Ambrosius Goldenloin.