Kion is the son and youngest child of Simba and Nala, the younger brother of Kiara, and the protagonist of The Lion Guard. As the second-born child of the Lion King, Kion served as the leader of the Lion Guard, a team of animals who protect the Pride Lands and defend the Circle of Life. He was the fiercest member of the team before retiring and passing the role onto Vitani (although he still has the Roar of the Elders). He is now married to Queen Rani and has become King of the Tree of Life.