What's the worst anime you ever seen?

Attack on Titan is pretty mediocre. Fights scenes carry it.

Pupa. My mind was blown by this anime. I just couldn't get in to it and I felt like, if I were to be drinking acid--- that would be it.

truuuuuuuue ghost the manga was so good and the anime was so bad

Ergo proxy...-Not worst but couldn't stand watching after part 6 for some reason.-Still thinkin' about if i should keep going.

@Sxfe It does start out slow, but it does get pretty interesting later on. But I'd say the worst anime I seen was Gantz. Only because the typical reason, the manga being way better than the adaptation.

Final Fantasy Unlimited is hands down the worst produced anime. Everything from dialogue to character design and especially the fight scenes, Final Fantasy Unlimited is utter torcher to experience! https://m.media-amazon.com/images/M/MV5BMTM3NzUxZjctYzEzZC00OTY1LWI1NmYtOTY4NzkxNmJlNmRjXkEyXkFqcGdeQXVyMTA3OTEyODI1._V1_SY1000_CR0,0,666,1000_AL_.jpg

Another anime that I didn't care for storywise was Harmony! The premise is a fusion of Elfen Lied meets Psycho Pass but with a lazily written plot full of characters that are not motivating to follow or empathize with. The world is being controlled by systems the main characters don't believe in, so to prove they are right they do the most logical action possible! Kill themselves and then... Kill everyone else! Now you would think committing suicide first would be a problem with killing the rest of the world but that's where Harmony pulls a Metal Gear Solid to explain it was the work of Nanomachines! This story is STUPID! Favorite quote from the movie, "Our vaginas belong to us!" That is a real line in the show and the backbone of all reasoning in what transpires after. It is so terrible! https://data.whicdn.com/images/279554748/original.gif

Great Dai Shogun. Mediocre animation, not enough giant robot fights, bland characters, and massive wasted potential. Makes me wish the anime was under the care of a better director.