Roster: http://onepiecepodcast.com/2016/03/19/one-piece-burning-blood-full-character-roster-revealed/
Support Characters Info: http://www.onepiece-game.com/us/screenshot/announcing-six-support-characters/
OP:BB Live Action Trailer: https://www.youtube.com/watch?v=rdatEFBG8FE
There is also support characters (they give status aids to the fighters) but I don't think they revealed them all yet.
So far the support characters that are confirmed are:
Support Characters Info: http://www.onepiece-game.com/us/screenshot/announcing-six-support-characters/
OP:BB Live Action Trailer: https://www.youtube.com/watch?v=rdatEFBG8FE
Koala also has a swimsuit version but it's exclusive in the V-Jump Strategy Guide.Luffy (Gear Four ver. included as Japanese first edition Bonus DLC, Pre- and Post timeskip ver., with Kung fu, and Champion Luffy)
Zoro
Sanji
Nami (normal and separate swimsuit ver. as Japanese first edition DLC)
Usopp (includes Pop Green attack)
Robin (normal and separate swimsuit ver. as Japanese first edition DLC)
Franky (includes General Franky transformation)
Brook
Chopper
Whitebeard
Boa Hancock (normal and separate swimsuit ver. as Japanese first edition DLC)
Doflamingo
Bartholomew Kuma
Gecko Moria
Ivankov
Bon Clay
Bartolomeo
Perona (normal and separate swimsuit ver. as Japanese first edition DLC)
Marco
Sengoku (includes Golden Buddha form)
X-Drake (includes dinosaur transformation)
Law
Shanks
Blackbeard ( also with a ver. using both Devil fruits)
Eneru (includes the usual 200 Million Volt transformation)
Kizaru
Akainu
Aokiji
Smoker
Crocodile
Sabo
Ace
Fujitora
Jozu
Eustass Kid
Mihawk
Koala
Burgess
Jimbe
There is also support characters (they give status aids to the fighters) but I don't think they revealed them all yet.
So far the support characters that are confirmed are:
Dr. Kureha
Square Sisters
Laboon
Karoo
Curly Dadan
Bepo