My point still stands, most of those characters are still more well known and more deserving than some indie char from less than 5 years ago that wasn't even the main character.
Oh I don't disagree, I don't think Sans is likely at all. Partially because he, indeed, is not the main character.
But I also think that you're underestimating just how big Undertale is, and how popular it is in Japan - especially for an indie title. It and Shovel Knight are in essence the only indie games that have any serious shot at ever getting added to Smash (at least, as it currently stands).
They don't need to be. He would be competing with the third parties and the bar is lower for first party people, like it always has been.
Sans definitely isn't in the running though. Realistically if they could get anyone, which after Banjo they probably can, I'd say the biggest two missing now are Sora and Goku (ugh).
I mean if we're pulling out non-gaming franchises, there absolutely are bigger franchises than DBZ - Marvel (particularly Spider-Man; and with Nintendo working with Marvel for Ultimate Alliance 3, that wouldn't be
impossible), Star Wars and Harry Potter, all are series that are bigger than Dragonball.
That said, I do not believe we'll be getting non-gaming characters. That's basically the single one explicit rule that Sakurai has stated - several times even - in regards to Smash, and I think that Nintendo definitely has the respect for him as director for one of their biggest flagship franchises to not force that on him, and given the selections so far, I do think that he has some sway in the selection process as well.
Plus, most of these non-gaming characters are an absolute mess to license because there's regional license holders that you'd have to negotiate with. Like if you know Tatsunoko vs Capcom, Capcom was not able to procure the rights for one Tatsunoko character in the West, who was then cut in the Western release of the game.
