>>23455079
DLC 1
-Bryger
-Big O
-Kamen Rider Skull
-Kamen Rider W
-Kamen Rider Accel

DLC 2
-Jeeg
-Getter Noir 1
-Getter Noir G
-Da-Garn X
-Great Da-Garn GX

That fills 10 units total. Yes, the upgrades count.