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Aslan

Aslan, the Great Lion, is the titular lion of The Lion, the Witch and the Wardrobe, and his role in Narnia is developed throughout the remaining books. He is also the only character to appear in all seven books. Aslan is a talking lion, the King of Beasts, son of the Emperor-Over-the-Sea. He is a wise, compassionate, magical authority (both temporal and spiritual) who serves as mysterious and benevolent guide to the human children who visit, as well as being the guardian and saviour of Narnia. C. S. Lewis described Aslan as an alternative version of Jesus as the form in which he may have appeared in an alternative reality. In his book Miracles, C.S. Lewis argues that the possible existence of other worlds with other sentient life-forms should not deter or detract from being Christian:

may be full of lives that have been redeemed in modes suitable to their condition, of which we can form no conception. It may be full of lives that have been redeemed in the very same mode as our own. It may be full of things quite other than life in which God is interested though we are not.