NOTE: This is an official character from The Lion King: Six New Adventures books. This character is not seen in any of the movies.
Kopa is the son of Simba and Nala, and technically the older brother of Kiara. He appears only in the book and it's confirmed that He and Fluffy are not the same character. Kopa is not official for the films.
* In Sourcecast interview Phil Weinstein, director of Simba's Pride comfirmed that he had no knowledge of Kopa during production of the film.
* Alex Simmons, author of Six New Adventures confirmed that Kopa his creation, not Disney's.
* Since Six New Adventures were a prequel to Simba's Pride, Kopa is older than Kiara.