Fighter Pass 1 (DC Heroes):
Firestorm
Lobo
Huntress
Impulse
Red Tornado
Vixen
Booster Gold

Fighter Pass 2 (DC Villains):
Carol Ferris
Larfleeze
Ultraman
Owlman
Superwoman
Johnny Quick
Power Ring
Black Mask
Victor Zsasz
Anti-Monitor
Poison Ivy
Blackfire

Fighter Pass 3 (Marvel Villains):
Abomination
Dracula
Electro
Flag Smasher
Grim Reaper
Klaw
Killmonger
Carnage
Rhino

Fighter Pass 4 (Marvel Heroes):
Black Knight
She-Hulk
Spectrum
Ms. Marvel
Moon Knight
Captain Britain
Sentry
Shang-Chi
White Tiger (The Female One)

X-Men Pack (Ultimate Edition Exculsive):
Havok
Nightcrawler
Banshee
Sunfire
Rogue
Psylocke
Gambit
Jubilee
Bishop
Cable
Domino