Street Fighter Side:
Ryu
Ken
Guile
Chun-li
Abel
Cammy
Sagat
Dhalsim
Zangief
Rolento
Ibuki
Hugo
Poison
Vega
Balrog
Bison
Dudley
Juri
Elena
Cody
Guy
Rufus
Akuma


Tekken Side:
Kazuya
Nina
King
Marduk
Bob
Julia
Hwoarang
Steve
Yoshimitsu
Raven
Kuma
Heihachi
Lili
Jin
Jack
Bryan
Law
Paul
Asuka
Christie
Leo
Xioayu
humanoid-Ogre (Final Boss as well)

Guest characters:
Pacman, he rides a mokujin, who is a tekken joke character

PS3 and Vita exclusives:
Toro
Kuro and Cole