Since my childhood I have been part of the fandom that supports that the little "Kopa" lost son of Simba and heir to the throne, exists and still lives. So far I had the courage to draw something about it.

Inside my fancanon, I believe that by surviving Kopa from Zira's attack, he fled outside of the Simba's kindom, to meet a strange old lonely lion, with whom he decided to stay alive. That lion is Scar.
With "My uncle Scar" Kopa does not know that Scar is actually part of his family, but he says "Uncle" to him. Scar knows that Kopa is Simba's son, but prefers to become the one who does not know and teach kopa to be evil.

*But of course I have my own version of the story of Kopa, almost like all the fans of the lion king, but I do not plan to tell and write about it, if only I will upload some drawings of what I invented from time to time*