Toskmûnster

The Toskmûnster (tooth monster) is known for its teeth and tusks. That’s all you see.
The monster hides in the shadows and actually looks like a shadow, a little bit like Slenderman.
He hides in everything that has a shadow and bites or stabs its prey with its teeth and tusks when you least expect it.
His teeth are like razors and its tusks are like spears.