EDIT: Most people dont understand. These are NOT characters going to be in Showdown. And we know absolutely nothing about the 4th game. But they were all candidates to be in Smash bros Brawl, and I think some of them might be in Showdown.
The fourth game in the Smash Bros. series, Super Smash Bros. Showdown, is of course not coming out until a few years have passed, and now, only a few things are set. That includes the idea of which characters they will use. As Nintendo gets new characters all the time, and some most likely will be changed to them, don't take this list as official. This is not official or released yet, but it's the closest to the truth we will get. If you don't believe me, I understand, and won't back up my claims. But the next Smash Bros. will be called Showdown. I got indirect connections to Masahiro Sakurai, and will often get some of his ideas for characters in Showdown. We know absolutely nothing about the characters it will include, but we are not clueless... When they made Brawl, they made a list of 71 characters and picked the ones that worked the best. This was the list which they took examples from when making Brawl, so expect some characters to show up in Super Smash Bros. Showdown in a few years. Keep in mind I got the sources indirectl, but have spoken to Masahiro, so there is likely to be a few mistakes.
Mario (Alt. form of Mario & Fludd)
Mario & Fludd (Alt. form of Mario)
Luigi
Bowser
Peach
Toad
Yoshi
Wario
Donkey Kong
Diddy Kong
Dixie Kong
King K. Rool
Dr. Mario
Paper Mario
Bowser Jr. (Alt. form of Shadow Mario)
Shadow Mario (Alt. form of Bowser Jr.)
Baby Mario Bros.
Link
Young Link
Toon Link
Zelda (Alt. form of Sheik)
Sheik (Alt. form of Zelda)
Tingle
Midna & Wolf Link
Ganondorf (Alt. form of Ganon)
Ganon (Alt. form of Ganondorf)
Impah
Squirtle (Alt. form of Pokémon Trainer)
Ivysaur (Alt. form of Pokémon Trainer)
Charizard (Alt. form of Pokémon Trainer)
Pichu
Pikachu
Raichu
Jigglypuff
Mewtwo
Lucario
Eevee (Alt. form of Rival Pokémon Trainer)
Hitmonlee (Alt. form of Rival Pokémon Trainer)
Blastoise (Alt. form of Rival Pokémon Trainer)
Zero Suit Samus (Alt. form of Power Suit Samus)
Power Suit Samus (Alt. form of Zero Suit Samus)
Fusion Suit Samus
Ridley
Mecha Ridley
Kirby
Fighter Kirby
Gooey
Meta Knight
King Dedede
Lololo & Lalala
Marth
Roy
Ike
Lyn
Jaffar
Ninten
Ness
Lucas
Fox
Falco
Wolf
Krystal
Pit
Captain Falcon
Ice Climbers
Captain Olimar & Pikmin
Mr. Game & Watch
R.O.B.
Snake
Sonic
Mega Man
The fourth game in the Smash Bros. series, Super Smash Bros. Showdown, is of course not coming out until a few years have passed, and now, only a few things are set. That includes the idea of which characters they will use. As Nintendo gets new characters all the time, and some most likely will be changed to them, don't take this list as official. This is not official or released yet, but it's the closest to the truth we will get. If you don't believe me, I understand, and won't back up my claims. But the next Smash Bros. will be called Showdown. I got indirect connections to Masahiro Sakurai, and will often get some of his ideas for characters in Showdown. We know absolutely nothing about the characters it will include, but we are not clueless... When they made Brawl, they made a list of 71 characters and picked the ones that worked the best. This was the list which they took examples from when making Brawl, so expect some characters to show up in Super Smash Bros. Showdown in a few years. Keep in mind I got the sources indirectl, but have spoken to Masahiro, so there is likely to be a few mistakes.
Mario (Alt. form of Mario & Fludd)
Mario & Fludd (Alt. form of Mario)
Luigi
Bowser
Peach
Toad
Yoshi
Wario
Donkey Kong
Diddy Kong
Dixie Kong
King K. Rool
Dr. Mario
Paper Mario
Bowser Jr. (Alt. form of Shadow Mario)
Shadow Mario (Alt. form of Bowser Jr.)
Baby Mario Bros.
Link
Young Link
Toon Link
Zelda (Alt. form of Sheik)
Sheik (Alt. form of Zelda)
Tingle
Midna & Wolf Link
Ganondorf (Alt. form of Ganon)
Ganon (Alt. form of Ganondorf)
Impah
Squirtle (Alt. form of Pokémon Trainer)
Ivysaur (Alt. form of Pokémon Trainer)
Charizard (Alt. form of Pokémon Trainer)
Pichu
Pikachu
Raichu
Jigglypuff
Mewtwo
Lucario
Eevee (Alt. form of Rival Pokémon Trainer)
Hitmonlee (Alt. form of Rival Pokémon Trainer)
Blastoise (Alt. form of Rival Pokémon Trainer)
Zero Suit Samus (Alt. form of Power Suit Samus)
Power Suit Samus (Alt. form of Zero Suit Samus)
Fusion Suit Samus
Ridley
Mecha Ridley
Kirby
Fighter Kirby
Gooey
Meta Knight
King Dedede
Lololo & Lalala
Marth
Roy
Ike
Lyn
Jaffar
Ninten
Ness
Lucas
Fox
Falco
Wolf
Krystal
Pit
Captain Falcon
Ice Climbers
Captain Olimar & Pikmin
Mr. Game & Watch
R.O.B.
Snake
Sonic
Mega Man