I don't particularly hate or strongly like any Mario character... Because they're pretty one dimensional for obvious reasons.
Only two I can legit say I like as a CHARACTER is
because she has actual back story and a calmer demeanor, and
because of how much more fleshed out he's become with the Mansion games and RPGs and such. But that's still not much compare to so many of my other favorite characters from other series.
can be better thanks to the Wario Ware titles but I still find all the OTHER Wario characters more interesting since they're always doing something new each game while Wario just greeds himself up 24/7.
To tell you the truth l, I like all the Mario characters. Even
They each have their own quirk
is vanilla but has a just as bad ego problem as
is scarycat who can show a lot of toughness and is kinda cynical.
is a princess with emotional issues as super powers and is competitive as hell
just wants to be a Star and the hero sometimes
is a greedy badass who has the ladies all over him and doesn't give a damn about what he does
is a gorilla who likes sex
Waluigi is just an asshole that no one likes and is a big showoff
Daisy is a sassy black woman living in the desert.
is just everyone's babysitter and is probably smarter than most people
is a tech geek with mommy issues
is just some nice librarian
And
is just a cheeky cheap mofo who pretty much made ZeRo too dominant than he should have been.