Nintendo held a special Nintendo Direct earlier this evening, where Masahiro Sakurai discussed development of the latest in the Super Smash Bros. franchise. He revealed a few returning characters, as well as several new Pokémon that will be joining the fray this time around. This includes several new ball-released creatures, as well as two new playable Pokémon that range from the first generation to the last one released.
The new Smash Bros. titles will feature a Master Ball item, rather than the plain old Pokéball we've seen in previous games. New creatures that can be released from this include Arceus, Eevee, Fennekin, Meloetta, Gogoat, Deoxys, Kyurem, Victini, Keldeo, and Xerneas. Palkia is also available, and behaves similarly to its appearance in Brawl's “Spear Pillar” stage. Meowth, Electrode, Staryu, Metagross and Entei are also set to return from previous Smash Bros. games.
The final moments of today's Nintendo Direct also revealed that Charizard and Greninja will be featured as playable, representing the first and sixth generations respectively. This is in addition to Pikachu and Lucario, who were confirmed a while ago. Unfortunately, those who were looking to play as Pokémon Trainer again will be sorely disappointed. Sakurai confirmed that characters will no longer be able to transform during battle. Nintendo has yet to announce whether Jigglypuff will be making a return appearance.