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Alt.
A Mr. Incredible Becoming Uncanny meme.
Smiling Mr. Incredible: Lazarus syndrome
Uncanny Mr. Incredible: Lazarus sign (CW: shows a thumbnail of a brain-dead person right when you open the article)
I can see how this could be disturbing. But given that there's a quite thorough description above the video, I'm curious; what did you expect the video to contain? To me this seems like common sense so I'm surprised that you had such a different experience.