Here are the troops you'd see, and what they would do and how strong they are.
The Alcerlic Demon tend to be generalized under nightmare demons like how the feecons are seen as fire demons, and the Okami could be generalized as lighting demons. Which some of their powers deal completely with nightmares but some can straight up be only related to nightmares if not have nothing to do with them. Alcerlic demons come in various looks a appearances due to the horrific alterations they have preformed on each other over time to make them into the creatures they are now where they could be considered to be their own sub race.
Apprentice Rank - The Face Sealers
When they have no face they can split their head into 2 halves to reveal their mouths that just are needle like teeth coating all very the insides of its mouth leading down and even into its exposed throat. During this time it will try to stay silent until it is within arm reach of its target and will try to pull in the target to try and eat its head hole.
They can mimic the look of anyone's face they are currently interacting with and mimic their voices. During this time the affected target will see themselves as faceless despite still having a face to everyone else. During this time the FS will not show injuries or pain though they can still be hurt, it just doesnt look like it.
When walking the FS walks like a normally but will go on all fours when running. They walk at a very slow pace though run twice as fast as a normal human. When they lack a face they can not speak, and they always seem to b curious... yet hungry to kill and eat victims. The seem to only have enough intelligence to lure in victims and seem to act like animals other wise but always obey their higher ups.