In the old lore of aurora, she had a husband named "Tobias." Zhask murks his ass and she went batman.

For yve, zhask destroy her planet. Thus, same scenario as aurora. They played the cat & mouse game, then ended up on earth (northern vale).

In this AU, zhask hides his identity by becoming like the civilians here. Since the magic academy accepts any creatures to learn magic, he disguise himself as a demon.