Face generator can make some downright scary faces and the quick and dirty fix could be with some more extreme fake scanlines.
So, a pic like this, but at about 60% opacity:

Can turn this piece of uncanny valley:

Into this much more appropriate retro comm screen pic:

Here's a random pic from google image search:

green version:

Or even a more fitting blue version:

Unfortunately, I'm not much of a programmer, so I couldn't even figure out the size of a whole generated image.
Some time ago, I also tried making some cartoonish replacement faces, but the game probably wants the exact number of images like the original, so making that would require either making about 25 types of everything or digging through code and recompiling. So I gave up on that :/