It's really good --- just for those that can understand it.
Note: I'm trying to make this review family friendly while still explaining what content is in the show, so do t be surprised if I use words like nipple or genitalia, there is not another substitute I can use for those words.
Evangelion is a show about humanity fighting these huge creatures called angels in giant robots called Evas, but that's only what it seems to be.
Evangelion really focuses on the characters in the show's mental states, which is one of the things that makes this show so good and special. It can be hard to understand and empathize with though if someone younger is watching, as why the characters do things because of their mental states and maybe just understanding where they are at mentally, as I wouldn't understand how these characters would feel at 9 years old.
There isn't really much graphic violence in the show, the most violent scene is when Eva 01 eats another angel, which really just shows blood and a bit of flesh being ripped into Eva's mouth, which isn't that bad, and I'm sure everyone in middle school and above could handle it just fine. Most other violent scenes involve the Eva's ripping off angel's limbs, which come off only with some blood. There is a lot of blood, but it is unrealistic and the only reason for the huge amount of blood is due to these creatures being gigantic.
Moving on to the sex, the sexual stuff in this show isn't graphic at all. Most scenes either cover up the privates (the females nipples, genitalia, and the male genitalia, the other parts of the breast are still shown) or just draw skin over them, except in the case of one scene where the nipples of a female are drawn but are the same color as the characters skin which is not detailed, and is not meant to be sexual at all. There is a sex scene, but it is off camera and only has a minute of suggestive sounds, and nothing is shown. The male characters can be pervy at times, even though they are just teenagers, but they live in Japan, meaning the age of consent is a lot lower which makes these things ok, which I would clarify to someone that doesn't know that.
Moving on from that, the show is really dark. The creator was severely depressed while making Evangelion and the characters have a lot of mental problems. Some characters who died before episode one have been shown to commit suicide. It is also the apocalypse and there is not much hope, which fused with other things, can be really depressing.
Also moving on from that, the story can get really confusing if you haven't analyzed everything, but luckily, there are people who have. It's not bad to research for a bit on things you don't understand, as most people don't on their first run. There is smoking but is just things some of the characters do which is absolutely normal and not focused on one bit. Beer is used as I would say as comic relief when Minato drinks it first thing in the morning, but it does not encourage drinking.
The ending is happy, but not quite satisfying if you don't know what happens, as most of the ending is super confusing. It ends of with a positive note about understanding your flaws and loving yourself.
Overall, Evanegelion is a great show that focuses on the psychological states of it's characters and has really good graphics for it's time, and has great character development and good action scenes. It really only deserves a TV-14 rating because none of it really touched a TV-MATURE rating, and is suitable for middle schoolers and up. (I left this out but the language in the show is only as bad as the language that would be used in a PG-13 movie, and profanity isn't used often).
Sorry if this whole review is jumbled and stuff like that --- this is my first review on the site and spent a lot of time righting it. Also Rei is best girl!
Bonus: End of Evangelion (because there is not a page for that yet)
End of Evangelion deserves an R rating. I'm not going to delve into it's plot or themes, because it and it's show's plot and themes are similar, only with this one being way darker.
Sex: The opening scene shows the female nipples which are colored in and detailed of a person in a coma, which someone masturbates to, and also includes the only F word, otherwise the language is really the same as in the TV show. There is also an image of female genitalia but it might be hard to notice because it is placed on a forehead and on hands, though i don't know the meaning of it (it doesn't have to do with sex). The whole movie is not afraid of showing full breasts and is not uncommon through the movie.
The violence is also toned up by a ton. An army of soldiers swarm an area and kill many people, which includes blood, gunshots, and bullet holes. The Eva fight contains Eva organs, like the guts or the brain, which is quite graphic and gory. The ending I won't spoil, as it is in my opinion the best ending out of the 2. End of Evangelion definitely deserves an R rating and parents should consider if they want kids seeing this stuff.