[Toon x Mobster] Height difference between the Huffman siblings and their teacher, Neuroveire.
Their father, Wallace Kingsman, put her in charge of training them when they were younger to get them ready to work in the Guktav.
The two siblings do learn to like her after a while, but they've also learned to not be careless around her since, despite her unwavering loyalty towards them and the branch, she's still a Demon. She enjoys people hurting and hurting people.
She's laughed seeing them cry, be afraid, or get mad before. She won't be changing at all.
Seeing as their heads are still connected to their necks and not currently inside of her stomach is definite proof that she likes them a whole lot and wouldn't go out of her way to hurt them on purpose. If they hurt themselves on their own, it's fair game to point and laugh at them though (before helping of course).
Evil as she is, she's also very reliable and capable at her job. The two learned to appreciate her even more when they started gaining more responsibilities in their branch, and she's usually there to give them a hand if they ever need it.