The first time Connor saw the Hogwarts house elves, he flipped a shit.
There were tiny demons in this school.
Sure, tiny demons that cooked and cleaned and were just generally helpful, but tiny demons, all the same.
And demons in a school full of defenseless children just didn't fly with Connor.
Though he had developed a taste for their treacle tarts.
(God, Holtz would have murdered him for that, if he'd been alive to see Connor eating food a demon had handled. He'd killed subordinates for less, back in the day. Not that Connor gave a fuck what the manipulative bastard would have thought. His days of seeking Holtz's approval were over.)
And don't even get him started on the stuff they taught in Care of Magical Creatures.
The professor of that particular class, a Mister Rubeus Hagrid and part giant if Connor had anything to say about it, had somehow managed to create a new kind of lower class demon, something he proudly introduced as a 'Blast-Ended Skrewt'.
In Connor's opinion, it would be quicker, easier and safer to simply burn the castle and the surrounding forest to the ground, rather than trying to teach a bunch of untrained children how to defend themselves against the forces of darkness.