How did Scar have a son?

Cub Kovu. He was apparently born at some point during Scar’s reign, as Scar hand-picked him to be his successor. As a result, he was referred to by the Outsiders as the Chosen One. However, Scar merely adopted him, and Kovu is explicitly stated to be of no relation to Scar.

Did Scar ever have a son?

And so, because of this, they changed Kovu from being the son of Scar to an adopted son of Scar.

Who does Scar have a kid with?

Scar had his own pride and Zira was his chosen queen. They also had three children (cubs) together: Kovu, Nuka and Vitani.

Is Nuka Scar’s son?

It was confirmed on a Facebook post by Darrell Rooney that Nuka despite popular belief and a quote from Flip Kobler, is not Scar’s son. But due to the confirmed romantic relationship between Nuka’s mother, Zira, and Scar, Nuka is Scar’s stepson.