I'm God fanfiction
It's like the writer took the original story and threw it into a blender with a bunch of dumb ideas. The characters are still there, but they're completely different, and the writer thinks they're the best thing since sliced bread.
A Naruto fanfic where Orochimaru is a sweet, pink-haired, drama-loving girl who likes to sing in the shower.
A SoulEater fanfic where Maka is a total brat who cries every time someone calls her 'Maka' instead of 'Miss Maka'.
A Sonic fanfic where Sonic is a loudmouth who doesn't know how to shut up and thinks he's the most important person in the world.