Nuka

When his mother arrived in Micail's kingdom, she was already pregnant. She didn't know it, however. She had left her old pack in a hurry after getting involved with a male from outside, and had had a hard time during her short nomadic life, becoming dehydrated and malnourished. Nuka and his sister only found out that they weren't Micail's children when they were both about to become teenagers, and their mother decided that they were old enough to tell their own story. It was a surprise to him, because he had never been treated differently from the other cubs, and even more surprising was that Micail had offered him a place to stay even after he had reached adolescence, because if he were the leader, he would have expelled any cub that wasn't his.
His sister, even though she is a female, decided to leave. Perhaps she wanted to try to get to know her wild father, but Nuka agreed to stay and become a patroller. His personality is much tougher than Micail's, but the respect he feels for the older lion keeps him in line, and he directs his coldness towards the task of patrolling the territory.