Saihate no Paladin

[Kraco]

If undeads are supposed to be scary monsters, make them look like monsters and not like "fun to hang out with" dudes, no matter their alignment.

How do you actually depict that? You might say an undead creature would be scary because it shouldn't exist. It might also be grotesque looking, like a rotting zombie with partially visible internal organs and bones. However, a human skeleton is just a human skeleton, even if it's reanimated. The horror would be solely in the eye of the beholder, so it's difficult to depict in a visual medium. In a novel you can spend all the time in the chapter to describe how a character feels. In anime (or manga), you can do something to show it, but ultimately not awfully lot, unless you suddenly pull off half an episode of flashbacks and whatnot. But it might ruin the flow.

Once again, I'd say the manga did it a little better with Blood since he didn't even have the eyes the anime gave him. In the manga he had nothing but deep, dark, lifeless, empty eye sockets, like a skeleton would. Gus is what he is. I reckon his face is the one he had in life, which would make sense. He can't change his face from scene to scene.

[KrayZ33]

How do you actually depict that? You might say an undead creature would be scary because it shouldn't exist. It might also be grotesque looking, like a rotting zombie with partially visible internal organs and bones. However, a human skeleton is just a human skeleton, even if it's reanimated.

You just do it like the thousand shows that already did it.
Obviously budget is limited, but that is really not something new?

Colour, details, shadows, lack of shadows.
I mean, come on, I literally posted the LN version of the same character who looks completely different and has a completely different aura to him.
Anime has extra benefits from getting to choose his voice and the way he moves etc.

You could add twitching head movements and "clacking" noises when he moves and all that stuff.
Not to mention that you can have "chibi" version and whatnot if you want them to picture the daily-life stuff, to emphasise the contrast between what he is and what he does or what is alignment is.