Aslan is a large, talking lion, who is terrifying, magnificent and beautiful all at once. He appears in different sizes to different people, although he himself never changes; as people grow in wisdom and character, they can perceive more of his greatness. Aslan is very wise, and a powerful force for good, but as Narnians often say, “He’s not a tame lion.” He is dangerous, and an unconquerable enemy, but he is unquestionably good.