Duster

Teddy (Mother)He would be an awsome choice... He has knives...
Flint (Mother 3) Comes complete with 2x4 also as an added bonus you get a Choice of original trenchcoat or normal clothing. :D Act now $19.99
Paula Jeff and Poo (Mother 2) But so far Jeff has only been considered... :/
Kumatora (Mother 3) Just what this game needs. A tomboyish girl raised by crossdressing beings called "Magypsy's" She has PSI and uses Gaunlets (She's cooler than Tifa....)
Duster (Mother 3) A perfect choice he only fights with his legs, He's the coolest thief even and can paralyse people for a few seconds with his Ladder thingy's. And he limps! :D
Ninten (Mother) He has been considered... But he should be a Costume for Ness. So Should Lucas (Mother 3) (Which has also been considered.)
Claus (Mother 3) Yes he has been Considered... But they would have to Spoil his Character plot (Thing...) if hes in. He would Be a good Choice though.
And if The Chosen Four are in it (Ness, Paula, Jeff, and Poo) They should have costumes of their Counterparts (So mainly Im only talking about Jeff and Paula) [Paula = Ana] And [Jeff = Loid]. Costumes wouldn't Hurt... It destroys Clones... Think about it! :D

"14. No characters only popular in Japan? Not all are returning?

Goodbye, Ness."
Are you high? If anything there will be more Characters from the Mother/Earthbound Series.
Ness is Popular in America too!
A list of Sakurai's considered characters are:

Koopa Troopa (Super Mario Bros. - 1985)
Hammer Bros. (Super Mario Bros. - 1985)
Toad (Super Mario Bros. 2 - 1988)
Petey Piranha (Super Mario Sunshine - 2002)
Geno (Super Mario RPG: Legend of the Seven Stars - 1996)
"Cel-Shaded" Link (The Legend of Zelda: The Wind Waker - 2002)
Tetra (The Legend of Zelda: The Wind Waker - 2002)
Link's Uncle (The Legend of Zelda: A Link to the Past - 1991)
Ganon/Ganondorf (The Legend of Zelda/The Legend of Zelda: Ocarina of Time - 1986/1998)
Bow Wow the Chain Chomp (The Legend of Zelda: Link's Awakening DX - 1998)
Ridley (Metroid - 1986)
Peppy Hare (Star Fox - 1993)
Slippy Toad (Star Fox - 1993)
Krystal (Star Fox Adventures - 2002)
Wolf O'Donnell (Star Fox 64 - 1997)
Diddy Kong (solo) (Donkey Kong Country - 1994)
Diddy Kong & Dixie Kong (Donkey Kong Country/Donkey Kong Country 2: Diddy Kong's Quest - 1994/1995)
King K. Rool (Donkey Kong Country - 1994)
Ninten (Mother - 1989)
Jeff (Mother 2 [EarthBound in the U.S.] - 1994 [1995])
Claus (Mother 3 - 2006)
Lucas (Mother 3 - 2006)
King Dedede (Kirby's Dreamland - 1992)
Lololo & Lalala (Kirby's Dreamland - 1992)
Marx (Kirby Super Star - 1996)
Oguma (Fire Emblem: Ankoku Ryuu to Hikari no Tsurugi - 1990)
Nabarl (Fire Emblem: Ankoku Ryuu to Hikari no Tsurugi - 1990)
Sigurd (Fire Emblem: Seisen no Keifu - 1996)
Ike (Fire Emblem: Path of Radiance - 2005)
Mia (Fire Emblem: Path of Radiance - 2005)
The Black Knight (Fire Emblem: Path of Radiance - 2005)
Black Shadow (F-Zero X - 1998)
Palutena (Kid Icarus - 1986)
Medusa (Kid Icarus - 1986)
Eggplant Wizard (Kid Icarus - 1986)
Isaac (Golden Sun - 2001)
Felix (Golden Sun: The Lost Age - 2002)
Little Mac (Punch-Out!! Featuring Mr. Dream - 1990)
Dragon Chan (Super Punch-Out!! - 1994)
Banker (Mario Paint - 1992)
Ray 01 (Custom Robo - 2004)
Captain Olimar (Pikmin - 2001)
Tom Nook (Animal Forest - 2001)
Chibi-Robo (Chibi-Robo! - 2005)
Muddy (Mole Mania - 1996)
The Blue Virus (Dr. Mario - 1990)
Lip (Panel de Pon - 1995)
Furil (Nintendo Puzzle Collection: Panel de Pon - 2003)
Takamaru (Nazo no Murasamejou - 1986)
Harry the Robot (Teleroboxer - 1995)
Sukapon (Joy Mech Fight - 1993)
Donbe (Shin Oni ga Shima - 1987)
Ayumi Tachibana (Famicom Tantei Club Part II: Ushiro ni Tatsu Shoujo - 1989)*
Professor Kawashima (Brain Age: Train Your Brain in Minutes a Day - 2006)
Urban Fighters (Urban Champion - 1984)
#166 Golden Sun characters and/or Advance Wars infantrymen
#218 Famicom Tantei Club characters

Third Party Suggestions

Mega Man (Capcom) (Mega Man - 1987)
G-Red (Capcom) (Gotcha Force - 2003)
Simon Belmont (Konami) (Castlevania - 1986)
Power Pro-Kun (Konami) (Jikkyou Powerful Pro Yakyuu '94 - 1994)
Lupus (Rare) (Jet Force Gemini - 1999)
Sora (Square Enix, Inc.) (Kingdom Hearts: Chain of Memories - 2004)
Doctor Wright (Maxis) (SimCity - 1991)
Princess Katia (From Software) (Lost Kingdoms - 2002)
Kalas (tri-Crescendo/Monolith Soft) (Baten Kaitos: Eternal Wings and the Lost Ocean - 2003)
Magnus Gallant (Quest/Nintendo) (Ogre Battle 64: Person of Lordly Caliber - 2000)
Thomas the Kung-Fu Master (Irem) (Spartan X [Kung-Fu in the U.S.] - 1985)
So far there are about 4 Mother series Characters he is considering. And If Jeff will be in it, Im pretty sure Ness will be in it...
I actually expect many Mother characters in the new SSBB game, Because Mother 3 came out in April many fans are asking... Now all we need is Flint (A freakin Cowboy), Duster(An awsome thief that limps), And Kumatora (A tomboyish Girl raised by crossdressers called "Magypsies")... But that might not happen.