Skullbeast - The Realm of TAoS

Forged from forgotten nightmares, the Skullbeast drags itself from the mire when the veil thins. Its skull, a cathedral of bone and sorrow, hums with the hymns of those it has devoured. It does not serve, it remembers — and in remembering, it hates. Those who meet its hollow gaze are said to dream of their own skulls cracking open, eager to join the choir.