In Changes, before they go to Chichen Itza, the group was discussing and arguing about who was who from the Fellowship of the Ring. I'm trying to recall if we ever got a complete list?
Harry = Samwise
Leah = Gandalf
I remember those two for sure. The following is my speculation.
Legolas = Thomas (freaky powers kind of match up)
Gimli = Mouse
Susan = Frodo (it's her "ring" they are after)
Sanya = Aragorn (Decendent of "the king")
Martin = Boromir (he's the one who kind of betrayed the quest)
What about Merry and Pippen? What part does Molly and Karrin play?