Who are the main characters in The Chronicles of Narnia?

The main characters in The Chronicles of Narnia change each book with the exception of Aslan, who is in all seven.

Books in chronicalogical order:

Magicians Nephew: Digory Kirke, Polly Plummerm, Jadis (The White Witch), Uncle Andrew, and Fledge.

The Lion, Witch, and the Wardrobe: Lucy, Edmund, Peter, and Susan Pevensie. Jadis, Mr. Tumnus, Mr. and Mrs. Beaver.

The Horse and His Boy: Cor (Shasta), Bree, Aravis, Hwin, and Rabadash.

Prince Caspian: The Four Pevensies, Caspian X, Trumpkin, Miraz, Trufflehunter, Nikabrik, Reepicheep.

Voyage of The Dawn Treader: Caspian, Lucy, Edmund, Reepicheep, Eustace Scrubb(Pevensie's cousin).

Silver Chair: Eustace Scrubb, Jill Pole, Puddleglum, Giants, Lady of The Green Kirtle.

The Last Battle: Eustace, Jill Pole, King Tirian, Jewel The Unicorn, Shift the Ape, Puzzle the Donkey, and Poggin.