C.S. Lewis used the name Aslan for the lion in The Chronicles of Narnia.
Aslan is the central symbol of authority, goodness, and restoration throughout the seven-book series. He is the son of the Emperor-Beyond-the-Sea and the creator of Narnia, appearing in every book except The Silver Chair, where he is discussed and seen in related scenes rather than playing a major role.
The name comes from the Turkish word for “lion.” Lewis chose it partly because the lion is traditionally associated with courage and royalty. Aslan is often compared with Christ because of his sacrificial death and resurrection in The Lion, the Witch and the Wardrobe, although he also functions as Narnia’s creator, judge, and guide.
Maugrim is the wolf captain in the first Narnia novel, while Rilian and Puddleglum are characters from later books.