Sorting Literary Foursomes Into Hogwarts Houses

I have often marveled that the main trio in Harry Potter books, plus Neville, represent the four houses perfectly, despite all being in Gryffindor. Ron is a true Gryffindor, Hermione Ravenclaw, Neville Hufflepuff, and Harry Slytherin. (Interestingly, I do not think this works for the Marauders, thought MuggleNet disagrees with me.) So, working on the assumption that any story with four main characters can represent the four Hogwarts houses, I set out to prove my theory. Some of these were more obvious than others, but I think my theory holds up! One thing I learned: maaaaan, the line between Slytherin and Gryffindor is razor-fine. Also: the group leader is most likely to be the Slytherin. The Lion, The Witch, and The Wardrobe Lucy: Hufflepuff Edmund: Slytherin Susan: Ravenclaw Peter: Gryffindor The Lord of the Rings (hobbits) Frodo: Slytherin Samwise: Gryffindor Merry: Ravenclaw Pippin: Hufflepuff   The Three Musketeers Athos: Slytherin Porthos: Gryffindor Aramis: Ravenclaw D’Artagnan: Hufflepuff Little Women Meg: Gryffindor Jo: Slytherin Beth: Hufflepuff Amy: Ravenclaw   Babysitters Club Stacey: Ravenclaw Claudia: Gryffindor Kristy: Slytherin Mary Anne: Hufflepuff Dracula (Lucy and her suitors) Quincey: Gryffindor Dr. Seward: Ravenclaw Arthur: Hufflepuff Lucy: Slytherin   The Fantastic Four Reed Richards/Mr. Fantastic: Slytherin Sue Storm/Invisible Woman: Ravenclaw Johnny Storm/Human Torch: Gryffindor Ben Grimm/The Thing: Hufflepuff The Wizard of Oz Dorothy: Slytherin Scarecrow: Ravenclaw Tin Woodman: Hufflepuff Cowardly Lion: Gryffindor Those four fit so perfectly that I think I’ll end there. Can you think of any others foursomes who fit the pattern (or who don’t)?