Sakurai's statements about 'keeping characters representative of themselves' and then taking one look at some of the Mario series:
: Happy go lucky joyful individual outside of Smash even when he's fighting his arch nemesis. In Smash he's seeing the red mist at ALL TIMES.
: Pure passive Princess who is friends to all. In Smash up until Ultimate she's forcefully using her subjects as meatshields and sexually using her hips and ass to attack.
: Scaredy cat with bad luck that's played for laughs. In Smash he's an absolute weirdo who can defy the laws of physics by shooting himself as a missle, that weird as **** banana plank taunt that was his Sm4sh render(ruining his amiibo forever) and had the Negative Zone as a Final Smash in Brawl as if he's part of an occult dark arts group.
: Mother to the Lumas, protector and carer. In Smash she seems to control them to fight her enemies for her whilst keeping her distance.
: See Mario but in a doctors coat.
: Depending on the Smash game depends on how animalistic he is. Bowser's capable of thought in his own series whilst here he's sometimes just a wild savage animal.
Like, that's not very accurate to the character at all.
And then there's the old comments about
being too peaceful and now we even have
who is a pacifist(like Peach supposedly is) now picking up a death scythe to murder the villain's gallery of Nintendo.
And then we have
who was deemed for ages to not be suitable for playable because of size,
who until recently arguably had little to do with his Zelda incarnation despite what people will defend("Oh, he represents power because he punches which is considered brutal so yeah very accurate")
who doesn't actually play like
in Awakening despite cosplaying as him in it. No, her playing like Marth isn't simply justified because she disguised herself as him once. That's reaching.
who's 'Rest' move is a OHKO that doesn't even mildly heal her.
who seems to have swapped personalities with Mario. Going from 'GONNA COMMIT GENOCIDE' to cheerfully stealing his friend's slogans and erasing Reyn from Smash players memory.
I'm sure theres more as well, but those are the most glaring examples of Sakurai's 'gotta stay faithful to the source material' being utter bull**** to me.