He gets his ROTJ look at the end for a brief time, though, after siphoning Rey and Ben’s energy. It looks way, way better than ROTS for sure, but it has a similar issue with the neck being too fat, but that’s just down to McDiarmid’s aging/weight compared to his 1982 self.

It’s also much more shrouded in shadow, even more so than ROTJ, which helps.

To add to others’ descriptions of how he looks before that - basically like McDiarmid today (no real prosthetics applied), but with all-white “dead” eyes, white skin, and blue/black lips, as if there’s no bloodflow/oxygen. If he has hair, it’s hidden under the hood. He’s got tubes hooked up to him, somewhat hidden by his hood, that supply a white liquid, and he’s connected to a mechanical “arm” that moves him around. His hands are gnarled with parts of a couple fingers missing.

And the lightning/strobe effects really add to the creepiness, though it might be a bit much for photosensitive people (the theater I went to for my second viewing had photosensitivity/epilepsy warnings posted outside the theater door and one popped up onscreen after the trailers, right before the movie started).