Noll

Tall—about 2 meters. The body is lean, but sinewy and strong, with tense muscles, as if constantly on the verge of attack. The skin is pale greenish, in places as if damaged or fused with the darkness.
The head is not quite human. The face is hidden behind a creepy mask or growth, resembling a skull with an elongated grin. The eyes glow a dull red, like embers in the darkness.
From the head and back grow branching, black, charred horns or appendages, reminiscent of dry trees. They appear alive, as if they can move.
Long, tangled hair merges with the dark mass behind the back—as if the shadow has a shape. The arms are long, the fingers elongated, the claws sharp and jagged.
On the body are the remains of belts, scraps of clothing, perhaps something like a belt with a skull. There are traces of wounds or cracks from which dark energy or blood oozes.

Calm and slow-moving, but can suddenly become extremely aggressive.
Not completely evil—more of a neutral-dark tone.
Can display a strange "pity," but also cruelty without emotion.
Poorly understands human emotions, but feels fear and pain.
Sometimes speaks in riddles.

He was once a man.
He had a different name, but it had long since faded—even he himself no longer remembers it. He lived on the edge of the world, where the forests were too thick and the nights too long. People said there was something ancient in that forest… and he decided to find out.
He didn't return the same.
The forest didn't kill him—it embraced him. Or, more accurately, remade him. Something ancient, connected to the roots of the earth and the darkness beneath, penetrated him. His body became a vessel. His mind, a battlefield.
Now he is neither man nor beast. He is a guardian… or a mistake.
He appears where fear has already taken root. He senses people who have darkness within them—and reaches out to them. Not always to kill. Sometimes… to take their pain. But the price for this is always high.
He doesn't speak in ordinary words. His voice is like the whisper of the wind in dry branches. Sometimes he understands people. Sometimes he doesn't.