Aslan is the Narnia character widely understood as a Christ figure.
Aslan is a talking lion and the central spiritual figure in The Chronicles of Narnia. He creates Narnia in The Magician’s Nephew, guides its rulers and visitors, and appears at decisive moments in the series’ history. His name is derived from the Turkish word for “lion.”
The clearest parallel appears in The Lion, the Witch and the Wardrobe. Aslan gives himself in place of Edmund, is killed on the Stone Table, and returns to life through a deeper magic. Lewis later explained that readers should not treat the Narnia books as a simple one-to-one retelling of the Bible; instead, he imagined how Christ might appear in another world.
Aslan is therefore more precise than answers such as “the lion” or “the king,” which describe him but are not his name. Mr. Tumnus, Caspian, and Puddleglum are important Narnian characters, but none fills Aslan’s central role.