Super Smash Bros. Smack Down

Super Smash Bros. Smack Down is a Siuper Smash Bros. fighting game featuring characters from other video games and TV shows including Uglydolls. This is the third Super Smash Bros. game with the most characters, behind Super Smash Bros. Unleashed and Super Smash Bros. Clashed.

Mario Universe

 * Mario
 * Luigi
 * Peach
 * Daisy
 * Bowser
 * Bowser Jr./Shadow Mario
 * Boo
 * Count Bleck
 * O'Chunks
 * Brighton
 * Twila
 * King Boo
 * Rosalina
 * Dry Bowser
 * Toad
 * Toadette
 * Dry Bones
 * Koopa Troopa
 * Paratroopa
 * Goomba
 * Paragoomba
 * King Tut Koopa
 * Koopalings
 * Koopa Kid
 * Hammer Bro.
 * Blooper
 * Dimentio
 * Cheep Cheep
 * Wiggler
 * Toadsworth
 * Pianta
 * Noki
 * Petey Piranha

Donkey Kong Universe

 * Donkey Kong
 * Diddy Kong
 * Dixie Kong
 * Tiny Kong
 * Funky Kong
 * Candy Kong
 * Lanky Kong
 * Wrinkly Kong
 * Cranky Kong
 * Klump
 * Krusha
 * Kalpyso
 * Captain Scurvy

Yoshi Universe

 * Yoshi
 * Birdo
 * Kamek
 * Kamella
 * Baby Mario
 * Baby Luigi
 * Baby Peach
 * Baby Daisy

Wario Universe

 * Wario
 * Waluigi
 * Mona
 * Ashley
 * Kat and Ana

The Legend of Zelda Universe

 * Link
 * Zelda/Sheik
 * Ganondorf
 * Toon Link
 * Young Link
 * Toon Zelda/Tetra
 * Young Zelda
 * Midna
 * Twinrova
 * Majora

Metroid Universe

 * Samus/Zero Suit Samus
 * Ridley
 * Meta Ridley
 * Dark Samus

Kid Icarus Universe

 * Pit
 * Palutena
 * Medusa

Ice Climber Universe

 * Ice Climbers

Robot Universe

 * R.O.B.

Kirby Universe

 * Kirby
 * King Dedede
 * Meta Knight
 * Knuckle Joe
 * Ribbon
 * Adeliene

Pikmin Universe

 * Olimar
 * Louie

Star Fox Universe

 * Fox
 * Falco
 * Wolf
 * Krystal
 * Slippy Toad

F-Zero Universe

 * Captain Falcon
 * Jody Summer
 * James McCloud
 * Samurai Goroh

Pokemon Universe

 * Pikachu
 * Pokemon Trainer
 * Lucario
 * Jigglypuff
 * Mewtwo
 * Pichu
 * Female Pokemon Trainer

Fire Emblem Universe

 * Marth
 * Ike
 * Roy
 * Lyn

EarthBound Universe

 * Ness
 * Lucas
 * Jill
 * Jeff
 * Paula

Game & Watch Universe

 * Mr. Game & Watch

Metal Gear Universe

 * Snake
 * Raiden
 * Gray Fox

Sonic the Hedgehog Universe

 * Sonic
 * Tails
 * Knuckles
 * Amy Rose
 * Blaze
 * Rouge
 * Dr. Eggman
 * Mephiles the Dark

SpongeBob Universe

 * SpongeBob SquarePants
 * Patrick Star
 * Squidward Tentacles
 * Eugene H. Krabs
 * Sandy Cheeks
 * Gary the Snail
 * Sheldon J. Plankton
 * Karen Plankton
 * The Flying Dutchman
 * Mermaid Man
 * Barnacle Boy
 * Man Ray
 * Pearl Krabs
 * DoodleBob
 * Dirty Bubble
 * Squilliam Fancyson
 * Dennis the Hitman

Uglydolls Universe

 * Wage
 * Bobo
 * Ox
 * Icebat

Fairly Odd Parents Universe

 * Timmy Turner
 * Cosmo
 * Wanda
 * Poof
 * Vicky
 * Mr. Turner
 * Mrs. Turner
 * Trixie Tang
 * Tootie
 * A.J.
 * Chester
 * Elmer
 * Dr. Bender
 * Cupid
 * Mr. Crocker

High School Musical Universe

 * Troy Bolton
 * Gabriella Montez
 * Sharpay Evans
 * Ryan Evans
 * Chad Danforth
 * Taylor McKessie
 * Kelsi Nielsen
 * Zeke Baylor
 * Jason Cross
 * Martha Cox
 * Tiara Gold
 * Donnie Dion
 * Jimmie Zara

Tuff Puppy Universe

 * Dudley Puppy
 * Kitty Katswell
 * Cheif
 * Keswick

Wipeout Universe

 * Abigail Santos
 * Allen Ford
 * Telsi Tancosova
 * Caroline Dalpe
 * Tania Doyle

Mii Universe

 * Male Mii
 * Female Mii

Suite Life on Deck Universe

 * Zack Martin
 * Cody Martin
 * Maddie Fitzpatrick
 * London Tipton

Fanboy and Chum Chum Universe

 * Fanboy
 * Chum Chum
 * Kyle

Soul Eater Universe

 * Maka Albarn
 * Black Star
 * Death the Kid
 * Ox Ford

Final Fantasy Universe

 * Cloud Strife
 * Sephiroth
 * Vincent Valentine
 * White Mage
 * Black Mage
 * Ninja
 * Moogle
 * Cacutar
 * Tifa
 * Loz
 * Yazoo
 * Kadaj

iCarly Universe

 * Carly Shay
 * Spencer Shay
 * Nevel
 * Sam Puckett
 * Freddie Benson

Animal Crossing Universe

 * Mr. Saturn
 * Tom Nook
 * Phyllis

Assist Trophies

 * Toad Brigade
 * Baby Bowser
 * Lubba
 * Luma
 * Tanya Carter
 * Jennifer Norris
 * Navy Captain
 * Sandra Yang
 * Alan
 * Cyndra
 * Susan
 * Amber Lee Adams
 * Creg Taylor