""OH DOH" and he dropped his hammer on foot because he was fixing dog house of Sanas little holper when the big news came and he was so shocked of anger that he dorped it right on his so much toes."
Downer Ending: "Digimon" doesn't get a break until his third appearance, John is a zombie, Robin abandons Batman for abandoning his no-kill rule, Richter Belmont's son dies, and Fluttershy also dies a long, painful death that leaves everyone else distraught.
Evil Counterpart: Evil Digimon from DIGIMON 2: RETURN OF DIGIMON is this to the eponymous character.
Face-Heel Turn: Played to some degree in CRYING OF THE DEMON; the story claims that Simon Belmont was in fact "turns more evil by Darcula."
Digimon: IT IS NOT A GOOD TIME FOR A CHILDREN TO DIED
New Powers as the Plot Demands: A lot of the time the protagonists' powers are kept ambiguous and only referred to as "(character's name) powers", but early on into Batman: Nemesis Fight the titicular superhero "(shoots) a big fireball like on Dragon Ball Z" and uses "gohst powars" to subdue the disembodied enemy's spirit.
Precision F-Strike: The final line of dialogue in Knuckles Vses the Fox Power: "Ha ha you are too slow this time you fucking."
Troll Fic: May not apply anymore due to Chimaera's notoriety, but according to Heisanevilgenius at least one reviewer took the time to explain in detail how he got Batman's characterization wrong in Nemesis Fight while it was still on the pit.
The big reasons BATMAN and Doom were removed from Fan Fiction.net was due to the flame wars between people who took it seriously, people who wouldn't spoil the joke, and those who were laughing too hard.
Unexplained Recovery: In My Litte Ponly, Fluttershy is pretty clearly stated to have died after getting caught in the bear trap. However, just a couple of sentences later, she goes from being dead to simply being injured and complaining about how her leg is "very much blood". Of course, it's eventually rendered moot when she dies again after inexplicably getting shot.
What Could Have Been: In his reveal thread, Mattimer (the one behind the infamous Squirrel King) revealed that Peter Chimaera once offered to collaborate with him, but he turned him down since he was done with the fanfiction scene. But my god, can you imagine?