I have a doozy of a series of badfic involving underage relationships, plagiarism, threatening children with grievous harm and taking photos of a child, refusing to delete them when asked and calling said photos his treasures.

https://www.fanfiction.net/u/4307970/Xantrax-42

I have a list that goes into more detail if you want.

So you all know how much I like Monster Musume. And if you don't, well now you do.

Imagine my horror when someone decides to throw what my friend describes as hard vore into the MonMusuverse.

The result is sickening.

I couldn't make it past the third chapter, but so far everyone seems completely out-of-character. Kimihito is given powers he doesn't have in canon, and last I checked Miia just wanted to [redacted] Kimihito, not eat him, and it's also got graphic depictions of digestion and Kimihito getting turned on by it.

If it's mission material... this is a job for the Department of WhatThe or the DAVD, but I think my agents may need to be involved anyway because I'm pretty sure I'm the only PPCer that knows MonMusu.

http://www.toondoo.com/cartoon/9066929>Here's another comic strip from ToonDoo. Note Dracula shouting silently into his cellphone, and the floating pad of giant Post-It notes that speaks with a cryptic comment. If only Bram Stoker had remembered to include those scenes in his novel...

Or at least, a parody Suefic, seeing that description and the author's comment.

Anyway, I should at lease contribute to this thread. I did just find a badfic, but it's for Hatoful Boyfriend which is a kinda obscure continuum.
Basically, there's another human at St. PigeoNation's Institute even though this is literally impossible in the game because SPOILERS, the birds have turned into their humanized versions because REASONS, there's now a maid café in the school, the timeline is messed up and the game's main protagonist is thrown OOC by the time of the prologue, there's a sudden switch to what sort of looks like script format for around 10 lines followed by an utterly pointless POV change, lines from the game are ripped off in a way that clearly shows the contrast in writing quality, the mild-mannered Kazuaki jokes about his students, "If this was an anime, Hina knew she would be sweat dropping", aaaaaaaaand I gave up.
(Oh, and Ryouta's drag persona is Coolene, not Cooline. What would minis for this continuum even be? I can't think of anything what wouldn't be a walking spoiler.)
Here's a link: https://www.fanfiction.net/s/10752597/1/The-Apostle-of-the-Sun.

(And I'm now wondering what I'm doing with my life.)

Gravity Falls, I'm sorry...

From what I've seen, just going through it briefly, Mabel is seriously replaced.

(Also, pfahaha, "This is the story of how she [Twilight Sparkle] solves every problem all by herself, because she is the best pony and my favorite." If that's not a Sue, I don't know what is.)

Here is a Doctor Who fic I'm in the middle of sporking. Daughter of Rassilon who essentially is put into an escape pod and crash-lands on Earth a la Superman.