LOL! this is so funny. Mario Pikacho and Kirby is like please. while Parappa TORO and Cole is like are you serious? True, snake wasnt even on the Nintendo platform. W T F is he doing in Super Smash Bros?
Metal Gear was ported to the NES but it wasn't a 'true' version, as Kojima didn't give his consent to it and the team that ported it changed a few things, like no Metal Gear for a boss. Konami also had 'Snake's Revenge' made for the NES which was what prompted Kojima to make an actual Metal Gear 2 (don't think it was released on the NES and SR also was done with Kojima's knowledge). But aside from those, there was Ghost Babel on GBC which was an AU game and then the remake of Metal Gear Solid 1, 'Twin Snakes', on the Gamecube with some of the Metal Gear Solid 2 gameplay changes included.
As for why he's in SSB, Kojima asked for it.
W T F is he doing in Super Smash Bros?
Kojima asked if Snake could be in the next Smash Brothers, and Nintendo said it was cool with them.
Well, the first Metal Gear game that started the series was on Nintendo's platform, Iceman. And for the sake of being a nerd, Kojima personally begged for Snake to be in Melee, but production was too far along, so he got bumped to Brawl.
Edit: VERY good timing, eh? lol
Well yeah, nobody's doubting that Snake is the closest to exclusive a non-exclusive can get. He's already 100% going to be in this game (at the very least as Big Boss), and we should begin preparing our sandbags for the massive attack Smash fanboys are going to send once they find out.
oh dear god.