"Alzim, now that's a name! Leader of the Alten Mercenary Corps, master tactician, ex-general of the Cadmury Kingdom's forces, slayer of entire brigades, or perhaps most notable is he is a master Weilder. Sadly many of the young do not remember him."
Old man at the local pub
During a storm the PCs come upon a little boy that plays in the rain. Upon further inspection they discover that he has one eye and a long tongue lolling in its mouth. Spit dripping. It is a demon from beyond that can access our realm during storms, it eats all heads that are not its own, living and dead.