Although the Outworld fiends would brainwash the world under their rule, their loyalty to the Outworld fiends was divided into different levels. After all, there would be some side effects if they were forced to brainwash.
For example, the worlds that had been conquered by the Outworld fiends at the beginning had lived for several generations under their rule. These people had long forgotten that their ancestors were enemies with the Outworld fiends. Now, they regarded themselves as the Outworld fiends 'people. Even without brainwashing them, they would still be very loyal to the Outworld fiends.
