SHASTA is an orphan boy who escapes an evil Tarkaan and rides the Talking Horse Bree to safety in Narnia. Over the course of his adventures, during which he helps to save Narnia, Shasta discovers his true identity: he is actually Prince Cor, brother of Prince Corin and the eldest son of King Lune of Archenland. He had been kidnapped as a baby, and it is only now, in The Horse and His Boy, that he is reunited with his real family.

Shasta reappears as King of Archenland, together with his wife, Aravis, in The Last Battle.

Shasta slipped his feet out of the stirrups, slid both his legs over on the left side, hesitated for one hideous hundredth of a second, and jumped. It hurt horribly and nearly winded him; but before he knew how it hurt him he was staggering back to help Aravis. He had never done anything like this in his life before and hardly knew why he was doing it now.
Aravis was stooping low over Hwin's neck and seemed to be trying to draw her sword. And now all three - Aravis, Hwin, and the lion - were almost on top of Shasta. He had no weapon, not even a stick or a stone. He shouted out, idiotically, at the lion as one would at a dog. "Go home! Go home!" For a fraction of a second he was staring right into its wide-opened, raging mouth ...