Let's see. I hope GBR 4 comes out in America
Characters
Luffy/Gear 2/Gear 3
(Doguog, Ace)
Zoro
(Kunia, Johnny Yosaku, Mihawk)
Sanji/Kitchen Knife
(Zeff, Patty, Carne)
Nami/Perfect Clima
(Bellemare, Genzo, Nojiko)
Usopp/Sogeking
(Pepper, Onion, Carrot)
Chopper/Monster Chopper
(Kureha, Dalton, Hiruluk)
Robin(Saul, Oliva)
Shanks
(Ben Beckman, Lucky Roux, Yassop)
Higuma
Morgen
(Helmeppo, Coby)
Buggy
(Avida, Mohji, Cajiab)
Kuro
(Jango, Buchie, Siam)
Don Krieg
(Pearl and Gin)
Arlong
(Nezumi, Hatchi, Chuu, Kroobi)
Smoker
(Tishigi)
Borgy(Dorry, Omio, Kaarse)
Vivi(Kohza)
Mr. 9(Vivi)
Mr. 7(Miss Father Day)
Mr. 6(Miss Monday)
Mr. 5(Miss Valetine)
Mr. 4(Miss Marry Christmas)
Mr. 3(Miss Golden Week)
Mr. 2
Mr. 1(Miss Doublefinger)
Mr. 0/Crocodile(Nico Robin)
Wapol(Chess, Kuromarimo)
Montblanc Cricket
(Shojo, Masira, Montblanc Norland)
Montblanc Norland
(Calagra)
Bellamy
(Sarquiss, Doflamigo)
Conis(Payaga)
Wiper(Laki, Kamakiri, Genbou, Aisa, Braham)
Eneru(Shura, Yama, Satori, Kotori, Hotori, Ohm, Gedastu)
Foxy(Porche, Hamburg, Capoty, Monda, Big Pan)
Paulie(Tilestone, Lulu)
Franky(Mos, Kiwi, Tom)
Lucchi(Kaku, Bluneo, Califa, Nero)
Spandam(Fukurou, Jyabura, Kumadori, Baskerville, Wanze, Jerry)
Stages:
Fushica Village
Orange Town Square
Syrup Village Shores
Arlong Park
Louge Town
Whiskey Peak
Little Garden
Drum Castle
Alubarna Palace
Jaya Town
Skypiea Ruins
Foxy's Ship
Galley-La HQ
Justice Tower
Unlockble Stages
Sea Train
Shipyard
Marine HQ
Courthouse
Underground Passage(Alubarna)
Tonjit's House
Maxim
Angel Street
Kaya's Manison
Jaya Jungle
Ohara
Nanohana
Yuba
Drum Snowfield
Avida's Hidout
That's all I could think of. Yes I barrowed some ideas, sorry.