Character Design: A New Enemy

It is about creating a new character who could come from the game Little Nightmares II.
This child is an enemy. He was raised by the Teacher. Even though he is a teenager, he uses his young features to lure the children who try to escape into a trap. When the time has come, he chops off their feet with an enormous axe. After that, he uses their shoes to decorate his necklace.