In The Chronicles of Narnia, the great lion who is the true king of Narnia is Aslan.
Aslan is the central figure of C. S. Lewis’s seven-book series and the only character to appear in every chronicle. He is described as the King of Beasts, the son of the Emperor-Over-the-Sea, and the rightful authority over Narnia. In The Lion, the Witch and the Wardrobe, Mr. Beaver identifies him as the true king who has returned to challenge the White Witch’s rule.
Aslan is more than a political monarch: he creates Narnia, guides its inhabitants, judges its enemies, and restores its people. His sacrifice on the Stone Table to save Edmund, followed by his resurrection, is one of the series’ defining episodes. Lewis explained that Aslan was not simply an allegorical version of Christ, but what Christ might be like in a world inhabited by talking animals.
The wrong options are characters from Narnia, but none is the true king: Shift is an ape, Emeth is a Calormene soldier, and Tash is a separate deity.