C237 Corpsemancer
Because you might be facing Abyss Realm slaves, not a human from Earth.
They would inherit the cruelty of the Abyss creatures. When dealing with Espers, they would never look at you with the eyes of their own kind.
Most of the Undead Mages had become slaves of the Abyss Realm. Only a small number of Undead Mages were able to maintain their faith and continue to stay in the human camp