Rule34

Rule34 is a massive booru-style imageboard dedicated to fan-made parody art — the name nods to the internet adage that if something exists, there's adult art of it — covering characters from countless games, anime, cartoons and franchises. Its defining strength is the booru tagging system: you can filter by character, franchise, artist and an enormous range of tags with real precision, making it the definitive archive for finding adult fan art of just about any character you can think of. For fans of parody and franchise-based content, nothing else comes close on breadth. The caveats: the art is fan-made so quality varies wildly from amateur sketches to polished professional work, it's images and art rather than animated video, and the layout is cluttered and raw. For viewers who specifically want fan-made parody art of their favourite characters with powerful tag-based search, Rule34 is the category king. Those wanting animated hentai or licensed manga should look to HentaiHaven or Fakku, but for franchise parody art, Rule34 is unmatched.