User blog comment:GoDai/GoDai's Translations: People and Groups (2) - Zahard and the 10 Families/@comment-4076672-20120616194043/@comment-1926430-20120617003644

Yeah I'm sure the day will come when Wangnan suddenly awakens Badass Zahard Mode.

Official sources say Zahard has no blood children, so his entire Royal Family is composed of adopted ones. This would probably point to the Princesses. But who knows, Wangnan might as well be his long-lost son. Maybe his mom told him that his father is Zahard and gave him the ring before she died or something... (just a hypothesis. :P)

I think sometimes it is mistranslated and states that Len is a part of the Royal Family because the "Royal" (왕실) in the squad name can be translated as "Royal Family", although it's supposed to mean that he just serves the Royal Family.