At first you didn’t know how they found you or why they
chose you, but you soon learned the truth. The world has
grown too crowded; human settlements have grown too large.
People’s minds are overloaded, and they can’t hear the lessons
the Primordial Dream teaches. Other creatures of darkness can
teach these lessons, but it isn’t in their nature to do so; most
of them don’t know how. The Dark Mother, therefore, reaches
into the minds of those who listen; these people are the ones
marked for Devouring.
As one of these people, you were offered a choice: lose your
soul, but gain a higher purpose and feast deeply on the fears of
humanity…or remain a dreamer. You chose to be a Beast. After
it was done, you were welcome into a brood.

They have the chance to grant
others a lesson from pain and fear, to give people a moment of
catharsis. And, of course, that moment of catharsis feeds the
Horror inside the Beast. Everyone wins.

Beasts are inherently evil: False. While Heroes like to
think of the Children as absolutely evil, the truth is that
a Beast is only as evil as her actions. Beasts do instill fear
and even grief into human beings, but they do it to impart
the wisdom of the Primordial Dream. (Of course,
not all Beasts are so benign.)