Kion

Kion (pronounced Kai-on) is the son and youngest child of Simba and Nala, the younger brother of Kiara, the husband of Rani, the grandson of Mufasa, Sarabi, Sarafina, and an unnamed lion, the great-nephew of Scar, the former Prince of the Pride Lands, the King of the Tree of Life and the main protagonist of the 2015 TV film The Lion Guard: Return of the Roar and its 2016 follow-up TV series' The Lion Guard and The Night Pride, both of which are sequels to the 1994 film The Lion King.

What Makes Him Pure Good?

 * As a cub, despite having somewhat of a sibling rivalry with his sister Kiara, he does still care for her and doesn't end up like Scar and Mufasa did. He has also gotten over it growing up.
 * Ever since he became the leader of The Lion Guard, Kion has been doing his best to protect The Pride Lands.
 * He and his teammates have been helping The Pridelanders with their problems, protecting The Pride Lands from evil animals (some of which are redeemed), Kion has also been saving his family and doing his best to be a good leader.
 * He helped Badili stand up to his bully, Mapigano.
 * He showed remorse for attacking Makuu and apologizes to his father.
 * He is willing to forgive his enemies, he even forgave his former archenemy, Janja despite their conflict and dislike.
 * He defeated Scar by summoning The Great Lions of the Past to judge him.
 * Despite receiving a scar from Ushari, he lashes out on his friends in anger but he felt regret for it that he let the evilness briefly take over.
 * He apologized to Rani for roaring at her brother.
 * After he came to The Tree of Life (along with his friends) he has been helping The Night Pride to protect The Tree of Life from Makucha's army.
 * He comforted Rani after her grandmother's passing.
 * He defeated Makucha's army and sent them far away from the Tree of Life.
 * After he came back home, he choose Vitani to be the new leader of The Lion Guard and he came back to The Tree of Life, married Rani and became King of The Tree of Life.
 * He inspired Vitani to be a better leader.
 * He saved Rani from Ork.
 * He forgave Ork, despite that she was working for Hunerd and being Makucha's sister and felt bad for how Makucha mistreated her.
 * He saved the Tree of Life from Hunerd.
 * He supports Vitani while she's leader her Lion Guard.
 * He saved the Tree of Life from Makucha's army and Jani.
 * He ended his friendship with Bunga, but he did that for understandable reasons, since he was being a bad friend and putted Rani's life in risk.