Despite me putting it as "Masterpiece" in my Anime List, I've decided to make it officially an 8.5!
Story
Unlike the previous two seasons, Bel finally meats his match. Let me explain:
Most action-adventure anime follow a trope of "hero triumphs over evil" to justify the acts of the protagonist. While Dungeon follows a similar type of genre, it takes its own approach and diverts itself from that mainstream path to create its own unique place. Obviously I don't mean every anime like this one does that, it's just for a general comparison. For example, in this one, the finale results in the protagonist fighting against his rival, in this case "evil," and instead of winning, falls short of victory. Combined with the social-political themes between factions (the different Familias and public opinion), this resulted in a kind of satisfying yet anti-climactic ending that makes you wanna see what comes next.
Character
Before I start off on saying why I enjoy the character of this anime, I wanna address the issue a lot of people share of "one-dimensional" characters. You see, sure, there might be some one-dimensional characters, but the anime isn't about them, and never was. They might have the spotlight for a bit, but the primary focus is how the protagonist(s) react to and overcome/convince them to change.
Now... speaking of character, I want to follow up on the social-politics I mentioned earlier in the Story review. Dungeon does a beautiful job of bringing Monsters and Humankind underneath the same roof, two sides of the same coin and makes you sympathetic towards their cause just as you might be to your average human character. The original author of the manga made fantastic characters for this, and I applaud him for it, even if I do dislike the the whole romantically dense protagonist type of characters. I mean, gods, I despise them. But hey, Bel isn't that bad and you get used to it pretty quick.
Overall
Overall I'll give this an 8.5/10. I skipped over art, sound, and enjoyment because I'd have both very little and quite a lot to say depending on the subject, so I did my best to keep it short with as little spoilers as possible, and if there are a few, I apologize!
Anyway, TL;DR, I recommend this! Thanks for reading, this is my first review in quite a while!