Probably not..Because when Scar plans to kill Simba,he would become king. But wouldn't his brother or sister become king, not scar?(if Simba had any)My opinion... he had no brothers or sisters.:D
Maybe, but we just don't know about them. Remember all of those young sleeping lions that Simba leaped over when he was running to his dad in the beginning? He kept saying, "Sorry!" It was a funny scene.
Sadly mufasa ate all the siblings and nala ran away and simba was the favroite so that is what happend. Also nala never knew simba was his brother so they had children.