5) Q*Bert: I can't say I was ever a huge fan of Q*Bert, but it's hard to deny the presence he had in arcades, and early consoles. I even had Q*Bert for the NES and I don't even remember asking for it. I just had it. Not sure how you could make combat work with a character with no arms, but I'm sure Nintendo could think of something.
4) Earthworm Jim: For a few years there in the mid 90's, this guy was huge. Even had his own cartoon show with Dan Castellaneta (the voice of Homer) doing Jim's voice. Earthworm Jim's games had an odd, surreal, and even gross art and humor style, kind of MTV's Liquid Television-ish, which makes him very much a product of his time. I highly doubt a remake or revival would work. But nostalgia is one of Smash's biggest themes isn't it. So this quintessential product of the 90's would fit right in. By the way, this art is by MegaRyan104 on DeviantArt, you should check out his stuff.
3) Vectorman: This "Orb-bot" was the star of two fantastic run and gun platformers on the Genesis late in the system's life span. I reviewed the first one a while back, and this character really deserves to be remembered more than he is. This is also some of MegaRyan104's art.
2) Sparkster: This little guy starred in the Rocket Knight game series, an anthropomorphic medieval steampunk sidescroller game series, of which I reviewed the first one, that, like Vectorman, deserves to be remembered far more than it is. There was a remake of it recently, but it was a digital only game and I hate not having a hard copy so I haven't played it. Still, with swordplay and a jet pack, this character would be a blast to fight as. And the world just needs more Sparkster.
1) Bomberman: I actually had to look up that this guy had not been in Smash already, because I can't believe Nintendo hasn't brought Hudson's flagship character into the fray already. They've worked in Hudson before in the past on the Wario vs Bomberman game Wario Blast. Come on Nintendo, if anything he should have been in there before Pac Man.
So there you have it, my top 5 non Nintendo character who should be in Smash. Don't agree? Well then, make your own damn list.