The knifechild

At a glance the knifechild appears to be a small waifish human of indeterminate gender, clothed in rags or sometimes in fine clothing that has been torn or burnt. They are small, 3 feet tall or so. They are only about as fast or strong as a child, but they are extremely robust, and seem to be insensible to pain, ignoring injuries and continuing to move as best as physically possible.

They are completely immune to any sort of cutting or stabbing attack, it just stops dead on their skin, but they can be injured by any other damage such as fire or blunt force. Their bodies break like human bodies, bones snapping, limbs pulping, etc, but inside their pale skin is nothing but ash, not even bones despite the sound and appearance of them breaking when hit. The core of the knifechild is a small shriveled fetus deep in the chest. Until this is destroyed, the demon will continue to live.

The knifechild has a cutting touch, causing anything that touches it to be chopped and stabbed. A finger brushing across your skin will cut inches deep, grabbing it's hand is like sticking your arm into a blender, and being embraced like falling into a spike pit. These attacks don't bypass armor ad they effect whatever is touched directly, so armor is still some protection.

They like to walk around recently destroyed or damaged cities and towns, waiting for someone to come and try to rescue them, and then use their touch to shred the would be savior and eat their body. They never speak.

A unique version called the Knifemother exists in the nursery. She looks similar, but appears to be closer to 15 years old and about 5 and a half feet tall. Her cutting aura works both on touch and on sight. The sight attack can only be focused on A singular unfortunate person.

I hope you've enjoyed this bit of world building. It has a lot more horror elements then my normal content, but I still enjoyed creating it.