Shan Yu's twins

We all know some of the villains had kids and Shan Yu was no expectation. He had twins, a girl named Wei Yu and a boy named Hui Yu who are as thick as thieves both literally and metaphorically.

Wei and Hui are sorta like their father amazing huntsman ship ,they also have a falcon, their eyes match their fathers but one thing is for sure they don't seem to have emotions. When the twins and their friends are sent to where the hero's and heroines live with their children a curse king dormant arise once more for the twins