Misyr Rex

The strongest Demon King who rules the Demon World 'Asmodia'. He also calls himself the 'Inhuman King'.
He solves most things with magic, and is widely known to be a cheat level powerful person.
He loves coffee and comes everyday to the cafe to drink some.
Despite his standing, he's friendly and cheerful, and goes with the flow. He also has a bit of a teasing(?) side where he can say dangerous things that aren't a laughing matter without a thought.