The Character With Probably The Worst Hatebase Ever
Not the worst hatebase. The worst hatebase would have to be a hatebase that sends death threats to anyone who disagrees with them.
That's practically any bad hatebase. Scrappy's hatebase mostly includes of him having his flaws exaggerated so much that it sounds like his portrayal is exactly like his portrayal in the live action film, and all of his good qualities are overlooked. Fanbases and hatebases sending death threats is actually kind of typical for the most of them. I'd say that Scrappy-Doo's scrappy status is contributed by the "Ron the Death Eater" trope.