There are some inexplicable outliers in DS1 though, notably in Blighttown. These big boys have little white triangle eyes, and the other boys are just... I dunno fuckin' weird, in general? Never been sure what their deal is, just nasty dudes.
Of particular note, all of this applies to the player character as well. Not only does your skin texture change when Hollow, but your character is made physically thinner to look more skeletal, and your eyes are blacked out completely.
Next is, to me, a most important detail: the eyes, or lack thereof.
The eye sockets are either completely empty or made ambiguously dark with heavy shadowing. Usually there's a small red glow burning in the sockets- though not always, and it isn't exclusive to Hollows.
I'm gonna continue posting about my adventures in VQGAN+CLIP in this thread, so if you're not interested you can just mute it and not have to worry about it.
The prompt for this one was "Bloodborne Cleric Beast by Junji Ito." It's not very Ito, but it *is* fucking incredible.