Have pictures of the creators. People like to have a face to put with a name. Put some quotes up as well. List the address of their website. They'll eat it up.
Teens love rock stars.
Give up on the little kids. They don't go into comic book stores anymore, and if they do, it's not with their own money. Aim for the most influential of all the ages-teenagers. And for God sakes, clean up the comic book stores. No type of teenager will go into there if you don't make them decent.