Who is the protagonist in The Complete Fairy Tales of the Brothers Grimm by Brothers Grimm?

In many of the stories, the Princess, is the protagonist.

Other protagonists include Hans ("Clever Hans", "Clever Elsie", "The Thief and His Master", "The Gnome", "Hans the Hedgehog", and "The Giant and the Tailor"), and Gretel (Hansel and Gretel, Clever Gretel).