They found out dark creatures were a match against the demons, thus, the vampires and werewolves the council so despised became their helpers.
"You here, protect me!" Pharrell, one of the surviving council heads, dragged Williams to his front, using him as a shield against incoming demons.
The boy was brave but not when a demon two times taller than him was involved. As a hunter trained to the bones, he heeded the order of the Council head notwithstanding his foul attitude.
But when they were surrounded, Pharrell did a vanishing spell and left the boy to his fate. Williams knew his death was around the corner, but he still put on a brave front.
He expertly dodged the sword the gigantic demon swung at him multiple times. But then as a human, his strength failed him, and just when he was about to be finished, someone came in between them and pierced a sword right into his heart, the demon disintegrated into dust.