Board Thread:Questions and Answers/@comment-25775668-20141128124618/@comment-5780397-20150317010329

Aside from what Kevo and Rumble said, Ging explained that Kite had a number in his Crazy Roulette that would try not to let him die at all costs. While the specifics are unknown, it apparently contributed to him keeping his identity as others have. He is part of the Royal Family because he shared the Queen's womb with Meruem, so (s)he is his twin.