User blog comment:Magma MK-II/Characters from Internet Memes/@comment-366087-20160225151246/@comment-26884760-20160225191018

here's my take, if someon makes an evil version of a trademarked character (Mario, Kirby, Barney, Supeman etc) it should still be counted as fan-fiction as it really wasn't authorized by the original creators at all.

Any character can be made a monster if someone wants to make a story or image of them, same with real life figures demonized via memes (Bush etc).

The exceptions are meme  characters that were original and designed from the start to be bad guys (Dolan, Trollface, Thepoplicks) - Dolan is based on Donald but is so terribly done it passes (albeit narrowly) as its own creation (at least under parody).

Some parodies can pass (Racist Mario, Pinkie from Cupcakes) but it should be the exception rather than the norm and most of the time the "memes" are really just ascended fan-fics.