Everything nearly Alien Covenant does up until the Protomorph or Praetomorph appears fully grown's nearly perfect.
It's the most perfect example of it's genre I'm able to think of as, niche as it is, the best Science Fiction Gothic Romantic Horror Existential film incarnation of the stories of both Dracula and Frankenstein.
A "other" man who's unrequited "love" leads to harvesting a woman's sexual organs to create a version of both an A.I and the human being together, to the form of a rape monster with male and female signatures intertwined at the root to dominate every other living thing.
The final evolution of three generations David considers "failures" ultimately, he's reached "success" that, according to "perfect AI" it is the one perfect organism, according to David and Ash, even Bishop and Michael believe it's magnificent, Soldier or Sentry, Praetorian or Queen, but perfection though perfection's something a human being can't even conceive of, never mind agree or disagree with, so we can't see the "perfect organism" objectively.