Here's another riddle on the theme of literature.
I am the oldest, and take care of the monsters.
My first is a loner, but has a few children.
My second is a lion, lover of wealth.
My third was the black sheep of the family.
My fourth, fifth, and sixth might be Taurus, Nagini, and Dracula.
My seventh is a bear, found in the north.
Then there's the eighth, the newest and one day the greatest. Coming out of nowhere, as it seemed, to supplant the black sheep and perhaps all the rest. Innocence, wisdom, and strength all run errands for this one.
Who am I (the speaker)?