The Accidental Hero by Matt Myklusch.

With a combination of superheroes and mages, electrical machines and a very twisting story Matt introduces the Imagine Nation. The country where all that is supernatural is created. The main character Jack Blank is founded orphaned and taked care of untill the day a robot shows up to kill him and is rescued by someone from the Imagine Nation. The plots its form as soon as Jack hit the ground in this country. Many super Heroes and, again, a twisting story that will keep you involved and looking for the next volume... coming out soon.
Totally recomended.
Character development is greatful, from Jack Black to the antagonist, and the secondary characters every one is presented except their secrets so it pushed you to desire to know more and more.