Well, I've tried to do my homework on Chibi-Robo after exposing my horrible ignorance of it, and here's what I got:
Chibi-Robo - 15%
My first instinct is that he has no chance: he's a tiny robot from a fairly niche series that has since gone Japan-only. Doesn't seem like a resume that makes the cut for Smash. However, I have to give him credit, considering he got a new game just two months ago, one that got its own Nintendo Direct for its announcement/release, and the simple fact that his series has expanded to four games and a Wii rerelease since 2005. He's even got potential for a Villager-style moveset, using moves like sweeping with a broom, summoning equipment/utilibots, or maybe plugging in to power up attacks. They could even throw in a battery mechanic to make him even more unique. At the end of the day, though, there's already tons of competition from characters that are arguably more important/popular, and with Villager and WFT already in, it may be difficult to justify yet another unusual addition. It seems a lot easier to just shuffle him into the assist trophy line-up than make him playable. Still, I have to give him credit: he's a heck of a lot more plausible than I initially gave him credit for.
Want - 25% - No significant interest, but he could be really interesting if they put their minds to it.
Porky Prediction - 9.4%
I imagine he gets a similar amount of support as Masked Man, so I'm predicting he gets a similar rating too, though I'll lop off the .03% since Glaciacott's already gone for 9.4%.
Nominations
Black Shadow x5