Founders

Godric Gryffindor, Rowena Ravenclaw, Helga Hufflepuff, Salazar Slytherin. I wish there was more about them in canon. I'd like to get to know Godric's dark side, Salazar's light side and so on.

By the way, does anybody think that the Sorting Hat is in fact Gryffindor's horcrux? That thing is freaking alive!