

The Royal Bloodline
The royal bloodline is anyone directly related to Lucifer,
but not distant relatives. Members of the bloodline include
(in relation to Lucifer): sons, daughters, grandchildren, great
grandchildren, nieces, and nephews. After that you are too
far removed from him to be of any importance.
Members of the bloodline are always men (sexist genetics). There
is one girl in the family, Cyanide, Firenze's daughter who was
born from the Oracle. Oracles can only have daughters and the
bloodline can only have sons, so it seems that the two cancelled
each other out, making the gender random.
Members of the royal family are born black on the gray scale,
rather than white, and exhibit demonic characteristics. They
are born with a lot more life force than other humans and usually
have supernatural abilities to some extent.
Most of them who become immortal are demons, but some
preform enough good deeds in life to become angels. But once
they are immortal, they are crazy awesome powerful. A single
immortal from the royal bloodline is equally as strong as about five
regular immortals, and half as strong as a god/goddess. If they
ascend and become a god or goddess, they are as powerful as
three or four regular gods/goddesses.
Also, being a member of the royal family makes one an automatic
potential ruler of Heaven or Hell. Anyone in the family can rule, as
long as the person in power before them is alright with it. Traditionally,
angels rule over Heaven and Demons over Hell, but this is a loose
tradition.