Corrin has the most legit hatedom and some of it isn't even related to Smash but his game as well.
Everyone ******* about Fates, the characters, the content, himself and him being in Smash.
He will always be hated and crapped on. Bowser Jr has always been from salty Koopaling fanboys and even they hate the Koopalings themselves now.
And Duck Hunt Dog is more of a meme than pure hatedom. They just thought his laugh was the ultimate trollish attitude. Nobody hated him, he isn't freaking Scrappy.
Now this guy
will forever have a hatedom until he's back to being an alt.
But as for unjustly hate, you can see
&
(only for her playstyle and nothing else aside from angry Daisy fans)