Reasons

"You look surprised for a weird reason," Verkan said as he tied up the captured follower of the demon god. "I can understand that, though. Even before I met one of them, I heard stories… I imagined they would be grotesque-looking creatures because of the power of the demon god."

 Zaos couldn't say that he didn't think the same. Although he killed three of them last year, he never had the chance to look at them properly. As for their pawns, they looked like living corpses thanks to the brainwashing. They probably were forced to do all kinds of things without having much time to rest or the chance to eat and drink properly.