Kopa

Kopa: "Heart" (Swahili)

Pride Affiliation: Priderlands (Birth), Oasis Pride (Adoption and Marriage)

Rank: Crowned Prince (Formerly), King (Formerly), King Father

Voice Actor: Eric Vale (Think of Yuki Sohma from the Fruits Basket anime)

Relations: Son to Simba, Nala, brother to Chaka, Shani, Kiara, Kion, Mate to Anisa, Father to Kabili, Jenebi, Subira

Noticeable traits: Out of Simba and Nala's cubs, Kopa is the palest and very much leaned toward Nala's side of the family, including with his mane color. His pelt turns a little darker when he's older, but not by too much and helps him resemble Nala more. 

"The first child of Simba and Nala, born once the Pridelands is regrown and full of life, once more. Kopa is a curious cub, and loved to learn about the world around him. As a young cub, he is nearly murdered by a vengeful lioness by the name of Zira. He thankfully manages to escape, after stunning her by biting her ear and giving her the trademark notch. The Prince, disoriented from the pain, runs off into the desert and collapses. He would of died right there, had he not been found by a lioness who lived in the oasis. He is taken in and tended to. The same lioness who found him, named Amana, also adopts Kopa as her own. After telling them his story, he is allowed to stay for his safety. He is there when Anisa is born, witnessing the birth. Once she's old enough, she and Kopa become fast friends and bond, especially after Kopa tells her his backstory and comforts him through his grieving. As a young adult, she is nearly claimed by a rogue male but Kopa comes to her defense, chasing the rogue off. Afterward, he confesses his feelings for Anisa. She confesses her feelings too and both are wed. Before long, Kopa becomes the proud father of three cubs. Once they are old enough, Kopa makes the journey back to the Pridelands to see his parents and family again. Simba and Nala are overjoyed to see their son alive and well, even offering to let him stay. Kopa denies, telling them his place is back with the Oasis Pride but promises to visit when he can and they are welcome to visit as well. With a farewell hug, Kopa returns to his home with his new family, ruling the Oasis Pride alongside Anisa and having his father-in-law, Baraka, as his adviser. He rules until his oldest son, Kabili, becomes the next King and retires with his mate peacefully."

Based on Simba and Nala's semi canon son, Kopa, from the Seven Adventures series and this is my take on him, aka, this design version is mine~