Super Smash Bros. Unleashed

SSBU will be considered the final game in the whole entire series, tying up to Super Smash Bros Finale. Like past installments, the same fighting arrangements go as such, but this has the largest character roster in the game, plus more.

Mario Series

 * Mario
 * Bowser
 * Princess Peach
 * Yoshi
 * Luigi
 * Waluigi
 * Wario
 * Rosalina

Donkey Kong Series

 * Donkey Kong
 * Diddy Kong
 * Dixie Kong
 * Donkey Kong Jr.
 * King K. Rool

F-Zero Series

 * Captain Falcon
 * Black Shadow

Golden Sun Series

 * Isaac
 * Garet

Zelda Series

 * Link
 * Zelda
 * Ganondorf
 * Midna
 * Toon Link

Pikmin Series

 * Olimar
 * Louie

Mega Man Series

 * Mega Man
 * Proto Man
 * Bass
 * Zero
 * Axl
 * Tron Bonnie

Legends of Chima Series

 * Laval the Lion
 * Cragger the Crocodile
 * Eris the Eagle
 * Worriz the Wolf
 * Gorzan the Gorilla
 * Razar the Raven
 * Bladvic the Bear
 * Rogon the Rhino

Kid Icarus Series

 * Pit
 * Palutena
 * Magnus

Game & Watch Series

 * Mr. Game & Watch

Kill la Kill Series

 * Ryuko Matoi
 * Satsuki Kiryuin
 * Mako Mankanshoku
 * Elite Four (Ira Gamagori, Nonon Jakuzure, Uzu Sanageyama, and Houka Inumuta)
 * Nui Harime

Sonic Series

 * Sonic the Hedgehog
 * Miles 'Tails' Prower
 * Shadow the Hedgehog

Metroid Series

 * Samus/Zero Suit Samus
 * Ridley

Kirby Series

 * Kirby
 * Meta-Knight
 * King Dedede
 * Prince Fluff

Pokemon Series

 * Pikachu
 * Jigglypuff
 * Mewtwo
 * Pokemon Trainer (Male; Snivy, Pignite, and Samurott)
 * Lucario

Star Fox Series

 * Fox
 * Falco
 * Wolf

Bosses

 * Master Hand
 * Crazy Hand
 * Mother Brain
 * Dark Boswer
 * Dark Link
 * Zekrom and Reshiram
 * Nazo
 * Scorm King of the Scorpions
 * Andross
 * Shademan EXE.

Note
I will sometimes not be able to finish the character roster in time, but anyone can help me.