Franchises, yes, but not off the back of an individual game.
Robin and Chrom have both only appeared in 1 game (other than cameos), and it's the same game at that! Similarly, but not exactly the same, Hades is only from Uprising, and Palutena only gained her fighting abilities in that game meaning she would be representing that single games as well.
for SSB Mario and Pokémon had several games in which each character appeared (heck, pokémon started with two games off the bat, but then had Blue, Yellow, TCG and Stadium to come off the back of). FEs characters came from two different games in the series, pokémon had a tonne of spin-offs by then, Mario had more games too... This is however the fairest retort as Ganondorf and Sheik both came specifically from that game, though both had reasons beyond (Sheik was part of Zelda and Ganon had been in previous LoZ games... plus he was last minute). And In Brawl Kirby had loads of games too... Not one shared appearance.