Well I am pretty much certain that Nuka is his son and he had definetly been with his father as a cub even though it is not mentioned in the movie, after all Nuka is much older then Vitani and he was born in Scar's reign and there is a fact that he was with his father when he was alive because Scar didn't choose Nuka to be his heir as he was to weak and stubbern.

What I don't get is, how could Scar of chosen Kovu to be his heir when Kovu wasn't even born or alive at that time
any way as for Vitani I personally think she isn't Scar's TRUE daughter.

These are just my personal oppinions it doesn't meen they could be true, but they could be possible
hope this helps

I think Scar is definatley the father of Nuka. They look too similar for him not too be. I dont think he's Vitani's father if he isn't Kovu's though. Vitani doesn't even look anything like him /or/ Zira/.

KopaLoverGirl543 -- Actually, Kovu only said that he was not the son of Scar.

Now, the movie does say that, but many fans think differently.

i dont think so cause kovu admited dat they were not scar's kids in lion king 2

It is never exactly said in movie, so people did make their theories. Some goes by how it looks like and believe Scar is father of both, and then there are some of us who do not. It is really up to you which interpretation you like more.

I thinks Nuka is the son of Scar, and Vitani is his daughter too. He had mated with Zira. Much people thinks that their don't look the same, but Vitani's blue eyes can come from Zira's parents,the same with Nuka.