The wizards greet the Lone Power by saying "fairest and fallen, greetings and defiance." The Lone Power is always trying to trick wizards into helping entropy by promising rewards. Nita and Kit are actually able to convince one of the Lone Power's manifestations to join the side of good.
Appears in all books in the series, always trying to defeat the wizards and take over everything.
When Nita and Kit first encounter the Lone Power, they see an impeccably dressed young man. In other books, the Lone Power takes on different appearances, such as a young woman and a wolf.