Devilman Crybaby. It's pretty similar to the ending in the manga, but I can't stand Crybaby's Satan, I feel he was a much inferior version of the original.
The way I see it, the original Satan is a once righteous "man" who knows that he made some mistakes and that those mistakes made him lose everything. On the other hand, Crybaby Satan is a moron who does things without thinking and lost everything because of his incompetence, but because he is so stupid, he doesn't even realize it.
Because Satan plays such an important part in the ending, disliking him makes me hate the ending as a whole.