Guardians of Childhood recreation of this [link] concept art from Rise of the Guardians. (that are in the 3 novels so far I am sorry Sandy) Nightlight, Ombric, North, Katherine, Bunny and Toothiana. :>
Katherine is a foundling girl who proves to be an unexpectedly fierce nemesis to Pitch. She is the Guardian of Storytelling. Her stories can relive the past and change the future. Katherine is known for recording the adventures of the Guardians and also telling intruiging stories.
I've been t hinking about reading the books for a while but since i saw rise of the guardians first i'm spoiled and want jack to be in the books. if i could find out if he was in the books or was getting his own book then i'd read it.
I think that the author of guardians of childhood started writing a jack frost book before they started the movie, and that's why Jack Frost if the main character in the Rise of the Guardians. I'm not sure, though.