Mordred quietly froze when Chadrick removed his mask. Ghouls... 

The only experience in all 18 years of his life in which had seen a ghoul was the death of his father. He shivered at the thought, he had only been a todler at the time and had witnessed what a pack of feral ghouls could do to a man. 

He tore his eyes away from Chadrick to occupy his vision with a crack on the wall. This ghoul was still civilized, but there was really no way for him to judge how long that would last. As far as Mordred knew or cared about ghouls, they all went feral eventually.