To be fair with Mario, its cast tends to be consistent, typically appearing in multiple games after they're introduced, unlike Zelda where it's exceedingly rare to see returning characters that aren't Impa or a Triforce wielder.
Still not much of an excuse for why Zelda is like this though, since there's no shortage of one-off first-party reps (literally any FE rep but Marth and Ike, both Mother characters, Sheik, etc.), just pointing out that comparing Zelda to Mario isn't a fair thing to do.
No, it doesn't. I gotta say, I never understood this argument.
, to this date, only has a single appearance in a mainline Mario title (Super Mario Land). Most of her popularity comes from the
spinoffs she stars in, mainly Mario Kart, Party and the sports games.
was about timing, not consistency. At the time of her inclusion, she had
three mainline appearances - Mario Galaxy, MG2 and 3D World (four if you count Mario Kart, a spinoff). In the latter two, she only appears after the game is cleared. So really, it's not that Rosalina is consistent, it's just that she was being pushed at the time.
is literally a character made for a spinoff and that doesn't exist outside of it, pretty much. He's only here because he was an easy clone to make in the Melee era.
is... technically consistent, yes, but not anymore than a Goomba or a Koopa is.
So really, the only "consistent" pick since Brawl was
- who arguably has a decently big role as a side villain. The rest are pretty much supporting cast members who became popular because of spinoffs. Impa and Tingle alone, for example, have more appearances in mainline Zelda games than Daisy and Rosalina have in mainline Mario games
combined. And the latter is even the star of his own two spinoff games.
I wanna be clear about this - I'm not bashing on these characters (hell, I've said here before that Rosalina is one of my favorite Mario characters), but I think that this whole "consistency" argument doesn't make any sense. The only way you could say that comparing both series is not fair is because Zelda has less spinoffs to speak of - that's about it.