Super Smash Bros. 101

Super Smash Bros. 101 is an upcoming fighting game to released on a next-gen Nintendo console at an unknown date. This could be the first game ever, in this franchise's history, to have an original playable character.

Newcomers

 * Joe Tachi (Super Smash Bros. 101)
 * Chibi-Robo (Chibi-Robo)
 * Mach Rider (Mach Rider)
 * Marco Rossi (Metal Slug)
 * Spring Man (echo) (ARMS)
 * Crash (Crash Bandicoot)
 * Paper Mario (Paper Mario)
 * Unnamed Generation 9 Pokemon (Pokemon)

Veterans

 * Mario (Super Mario Bros.)
 * Donkey Kong (Donkey Kong Country)
 * Link (The Legend of Zelda)
 * Samus (Metroid)
 * Yoshi (Yoshi's Island)
 * Kirby (Kirby series)
 * Fox (Star Fox)
 * Pikachu (Pokemon)
 * Ness (Earthbound/Mother 2)
 * Peach (Super Mario Bros.)
 * Daisy (echo) (Super Mario Bros.)
 * Bowser (Super Mario Bros.)
 * Ice Climbers (Ice Climber)
 * Sheik (The Legend of Zelda: Ocarina of Time)
 * Zelda (The Legend of Zelda)
 * Chrom (echo) (Fire Emblem: Awakening)
 * Meta Knight (Kirby Superstar)
 * Pit (Kid Icarus)
 * Zero Suit Samus (Metroid: Zero Mission)
 * Wario (WarioWare Inc.)
 * Ike (Fire Emblem: Path of Radiance)
 * Pokemon Trainer (Pokemon)
 * Diddy Kong (Donkey Kong Country)
 * King Dedede (Kirby series)
 * Olimar (Pikmin)
 * Villager (Animal Crossing)
 * Mega Man (Mega Man)
 * Wii Fit Trainer (Wii Fit)
 * Rosalina and Luma (Super Mario Galaxy)
 * Little Mac (Punch-Out!!)
 * Greninja (Pokemon)
 * Mii Brawler (Mii)
 * Mii Swordsman (Mii)
 * Mii Gunner (Mii)
 * Palutena (Kid Icarus)
 * Pac-Man (Pac-Man)
 * Robin (Fire Emblem: Awakening)
 * Shulk (Xenoblade Chronicles)
 * Ryu (Street Fighter)
 * Cloud (Final Fantasy VII)
 * Inkling (Splatoon)
 * Simon (Castlevania)
 * King K. Rool (Donkey Kong Country)
 * Piranha Plant (Super Mario Bros.)
 * Joker (Persona 5)
 * Hero (Dragon Quest XI)
 * Banjo and Kazooie (Banjo-Kazooie)
 * Terry (Art of Fighting/Fatal Fury)
 * Byleth (Fire Emblem: Three Houses)
 * Steve (Minecraft)
 * Protagonist (Astral Chain)
 * Wonder-Red (The Wonderful 101)

Secret Characters

 * Marth (Fire Emblem)
 * Luigi (Super Mario Bros.)
 * Falco (Star Fox)
 * Young Link (The Legend of Zelda: Ocarina of Time)
 * Captain Falcon (F-Zero)
 * Blood Falcon (echo) (F-Zero X)
 * Lucas (Mother 3)
 * Richter (echo) (Castlevania: Rondo of Blood)
 * Lucario (Pokemon)
 * Snake (Metal Gear)
 * Lucina (echo) (Fire Emblem: Awakening)
 * Ridley (Metroid)
 * Pichu (Pokemon)
 * Dark Pit (echo) (Kid Icarus: Uprising)
 * Dr. Mario (Dr. Mario)
 * Galacta Knight (echo) (Kirby Super Star Ultra)
 * R.O.B. (Gyromite/Stack-Up)
 * Ganondorf (The Legend of Zelda: Ocarina of Time)
 * Isabelle (Animal Crossing: New Leaf)
 * Ken (echo) (Street Fighter)
 * Mewtwo (Pokemon)
 * Roy (Fire Emblem: The Binding Blade)
 * Mr. Game and Watch (Game and Watch series)
 * Sonic (Sonic the Hedgehog)
 * Bowser Jr. (Super Mario Sunshine)
 * Duck Hunt (Duck Hunt)
 * Dark Samus (echo) (Metroid Prime 2: Echoes)
 * Incineroar (Pokemon)
 * Spinax (Fossil Fighters)
 * Toon Link (The Legend of Zelda: The Wind Waker)
 * Bayonetta (Bayonetta)
 * Jigglypuff (Pokemon)
 * Wolf (Star Fox 64)
 * Corrin (Fire Emblem Fates)
 * Min Min (ARMS)
 * Urshifu (Pokemon)
 * Sephiroth (Final Fantasy VII)

DLC Characters

 * Daegon (Super Smash Bros. 101) (Downloadable pre-order bonus)

New

 * Aerith (Final Fantasy VII)
 * Billy Hatcher (Billy Hatcher and the Giant Egg)
 * Blanka (Street Fighter II)
 * Bub and Bob (Bubble Bobble)
 * Imposter (Among Us)
 * Iori Yagami (The King of Fighters '95)
 * Jinjo (Banjo-Kazooie)
 * Kamek (Super Mario 2: Yoshi's Island)
 * King Hippo (Punch-Out!!)
 * Moogle (Final Fantasy III)
 * Mumbo (Banjo-Kazooie)
 * Qbby (BoxBoy!)
 * Rabbid (Rayman Raving Rabbids)
 * Rock Pikmin (Pikmin 3)
 * Skate (Streets of Rage 2)
 * Tails (Sonic the Hedgehog 2)
 * Tiles (Flip Wars)
 * TwinBee (TwinBee)

Returning

 * Alucard (Castlevania)
 * Andross (Star Fox)
 * Arcade Bunny (Nintendo Badge Arcade)
 * Ashley (WarioWare Touched!)
 * Black Knight (Fire Emblem)
 * Bomberman (Bomberman)
 * Burrowing Snagret (Pikmin)
 * Chain Chomp (Super Mario Bros. 3)
 * Chef Kawasaki (Kirby Super Star)
 * Color TV-Game 15 (Color TV-Game 15)
 * Dillon (Dillon's Rolling Western)
 * Dr. Kawashima (Brain Age: Train Your Brain in Minutes a Day!)
 * Dr. Wily (Mega Man)
 * Dr. Wright (Sim City)
 * Flies and Hand (Mario Paint)
 * Ghirahim (The Legend of Zelda: Skyward Sword)
 * Ghosts (Pac-Man)
 * Gray Fox (Metal Gear)
 * Guile (Street Fighter II)
 * Hammer Bro (Super Mario Bros.)
 * Isaac (Golden Sun)
 * Jeff (Earthbound/Mother 2)
 * Kapp'n (Animal Crossing)
 * Klaptrap (Donkey Kong Country)
 * Knuckle Joe (Kirby Super Star)
 * Knuckles (Sonic the Hedgehog 3)
 * Krystal (Star Fox Adventures)
 * Metroid (Metroid)
 * Midna (The Legend of Zelda: Twilight Princess)
 * Moon (The Legend of Zelda: Majora's Mask)
 * Mother Brain (Metroid)
 * Nikki (Swapnote)
 * Nintendog (Nintendogs)
 * Phosphora (Kid Icarus: Uprising)
 * Prince of Sable (For the Frog the Bell Tolls)
 * Rathalos (Monster Hunter)
 * Riki (Xenoblade Chronicles)
 * Rodin (Bayonetta)
 * Samurai Goroh (F-Zero)
 * Shadow (Sonic Adventure 2)
 * Sheriff (Sheriff)
 * Shovel Knight (Shovel Knight)
 * Squid Sisters (Splatoon 2)
 * Starfy (The Legendary Starfy)
 * Starman (Earthbound/Mother 2)
 * Sukapon (Joy Mech Fight)
 * Takamaru (The Mysterious Murasame Castle)
 * Thwomp (Super Mario Bros. 3)
 * Tiki (Fire Emblem: Shadow Dragon and the Blade of Light)
 * Waluigi (Mario Tennis)
 * Yuri Kozukata (Fatal Frame: Maiden of Black Water)
 * Zero (Mega Man X)

New

 * Bisharp
 * Calypso
 * Chansey
 * Celebi
 * Clefairy
 * Cursola
 * Diancie
 * Lunatone
 * Magearna
 * Meltan
 * Minior
 * Morpeko
 * Galarian Mr. Mime
 * Nickit
 * Pinchurchin
 * Poipole
 * Popplio
 * Rotom
 * Runerigus
 * Scorbunny
 * Skrelp
 * Skwovet
 * Sobble
 * Solrock
 * Toxtricity
 * Trubbish
 * Galarian Weezing
 * Volcarona
 * Zamazenta

Returning

 * Abomasnow
 * Abra
 * Bellossom
 * Bewear
 * Chespin
 * Darkrai
 * Dedenne
 * Deoxys
 * Ditto
 * Eevee
 * Electrode
 * Entei
 * Alolan Exeggutor
 * Fennekin
 * Genesect
 * Giratina
 * Gogoat
 * Inkay
 * Keldeo
 * Kyogre
 * Kyurem
 * Latias and Latios
 * Lugia
 * Lunala
 * Marshadow
 * Meloetta
 * Meowth
 * Metagross
 * Mimikyu
 * Moltres
 * Oshawott
 * Pyukumuku
 * Alolan Raichu
 * Scizor
 * Snivy
 * Snorlax
 * Solgaleo
 * Spewpa
 * Staryu
 * Suicune
 * Swirlix
 * Tapu Koko
 * Togedemaru
 * Togepi
 * Victini
 * Vulpix
 * Alolan Vulpix
 * Xerneas
 * Zoroark

Original

 * Peach's Castle
 * Kongo Jungle
 * Hyrule Castle
 * Brinstar (formerly Planet Zebes)
 * Mushroom Kingdom
 * Super Happy Tree
 * Dream Land
 * Sector Z
 * Saffron City

Melee

 * Princess Peach's Castle
 * Yoshi's Story
 * Kongo Falls
 * Great Bay
 * Rainbow Cruise
 * Mushroom Kingdom II
 * Yoshi's Island II
 * Jungle Japes
 * Temple
 * Fountain of Dreams
 * Corneria
 * Pokemon Stadium
 * Mute City
 * Brinstar Depths
 * Green Greens
 * Venom
 * Poke Floats
 * Big Blue
 * Onett
 * Icicle Mountain
 * Fourside
 * Flat Zone

Brawl

 * Delfino Plaza
 * Mushroomy Kingdom
 * Mario Circuit
 * Luigi's Mansion
 * Mario Bros.
 * Yoshi's Island III
 * Rumble Falls
 * 75m
 * Bridge of Eldin
 * Pirate Ship
 * Norfair
 * Frigate Orpheon
 * Halberd
 * Lylat Cruise
 * Pokemon Stadium 2
 * Spear Pillar
 * Port Town Aero Dive
 * New Pork City
 * Summit
 * Castle Siege
 * Flat Zone 2
 * Skyworld
 * WarioWare, Inc.
 * Distant Planet
 * Smashville
 * PictoChat
 * Hanenbow
 * Shadow Moses Island
 * Green Hill Zone

3DS/Wii-U

 * 3D Land
 * Golden Plains
 * Rainbow Road
 * Paper Mario
 * Gerudo Valley
 * Spirit Tracks
 * Dream Land GB
 * Unova Pokemon League
 * Prism Tower
 * SNES Mute City
 * Magicant
 * Arena Ferox
 * Reset Bomb Forest
 * Tortimer Island
 * Boxing Ring
 * Gaur Plain
 * Balloon Fight
 * Living Room
 * Find Mii
 * Tomodachi Life
 * PictoChat 2
 * Pac-Maze
 * Wily Castle
 * Mushroom Kingdom U
 * Mario Galaxy
 * Figure-8 Circuit
 * Woolly World
 * Jungle Hijinxs
 * Skyloft
 * Pyrosphere
 * The Great Cave Offensive
 * Kalos Pokemon League
 * Coliseum
 * Flat Zone X
 * Palutena's Temple
 * Gamer
 * Garden of Hope
 * Town and City
 * Wii Fit Studio
 * Wrecking Crew
 * Pilotwings
 * Wuhu Island
 * Windy Hill Zone
 * Pac-Land
 * Super Mario Maker
 * Duck Hunt
 * Suzaku Castle
 * Midgar
 * Umbra Clock Tower
 * Miiverse

Ultimate

 * New Donk City Hall
 * Great Plateau Tower
 * Moray Towers
 * Dracula's Castle
 * Mementos
 * Yggdrasil's Altar
 * Spiral Mountain
 * King of Fighters Stadium
 * Garreg Mach Monastery
 * Spring Stadium
 * Minecraft World
 * Northern Cave
 * The Ark
 * Isle of Armor
 * Crown Tundra
 * Operation 001-A

101

 * Battlefield
 * Small Battlefield
 * Big Battlefield
 * Final Destination
 * Smash Arena (Super Smash Bros. 101)
 * Bob-omb Battlefield (Super Mario 3D All-Stars)
 * Origami Castle (Paper Mario: The Origami King)
 * Juicy Jungle (Donkey Kong Country: Tropical Freeze)
 * Yiga Clan Hideout (Hyrule Warriors: Age of Calamity)
 * SR388 (Metroid: Samus Returns)
 * Crafted World (Yoshi's Crafted World)
 * Jambastion (Kirby Star Allies)
 * Titania (Star Fox Zero)
 * Wild Area (Pokemon Sword and Shield)
 * Wyndon Stadium (Pokemon Sword and Shield)
 * Corono Pokemon League (Pokemon Mono and Sepia)
 * Wario Castle (Wario Land II)
 * Sanderson House (Chibi-Robo!: Plug Into Adventure!)
 * The Park (Chibi-Robo!: Park Patrol)
 * Year 2112 (Mach Rider)
 * Death Valley (Metal Slug)
 * N. Sanity Island (Crash Bandicoot)

Trivia

 * Yoshi, Ness, and Lucas will have different recovery moves.
 * All of the newcomers, veterans, secret characters, and even Daegon will total up to 101 fighters (hence the name of the game's title despite more upcoming DLC characters).
 * Compared to 3DS/Wii-U and Ultimate installments of Super Smash Bros. (where the limit is 99 and 96 respectively), you can now create an unlimited number of Mii Fighters here.
 * In the Item Switch option, you can, for the first time ever in the franchise's history, choose what Pokemon and Assist Trophies can appear and what can't appear.
 * It's the first-ever Super Smash Bros. game where you have the option to switch the playable characters in the roster (especially the Mii Fighters.)
 * In Stage Selection, all the stages will be divided into six groups: Original, Melee, Brawl, 3DS/Wii-U, Ultimate, and 101.
 * You can now give a Mii Fighter and a custom stage you made a name that's now up to 100 characters as opposed to 10 and 16 respectively.

More details soon...