I have a question which is which lion from the Lion King is oldest out of Simba's children? And who is second oldest and then who is the youngest? Thanks.
If you want to know who came out first, Kopa is the oldest that way since SNA came out before the second movie. Kiara comes after him as TLK 2 was released after that, and Kion is the youngest as The Lion Guard was released on 2016. Canonically, Kiara is Kion's elder sister. Most fans like to think of Kopa as the oldest in their head canon, while some other think of Kopa as the youngest. Kopa's age can be whatever you want in your head canon since he is not canon to the movies and the TLG series, and doesn't exist there.