Although fictional characters have long dominated the reception of literature, films, television programs, comics, and other media products, only recently have they begun to attract their due attention in literary and media theory. The book systematically surveys today´s diverse and at times conflicting theoretical perspectives on fictional character, spanning research on topics such as the differences between fictional characters and real persons, the ontological status of characters, the strategies of their representation and characterization, the psychology of their reception, as well as their specific forms and constellations in - and across - different media, from the book to the internet.
I read part of this book as research for an essay about characterisation. It contains many interesting articles about how characters are created and interpreted, not only in literature, but in other kinds of media as well, such as movies and games. It's very academic from time to time, but if you have an interest in this, I can really recommend it.