11-15-2012 08:55 PM
On the IGN wiki, you can look at both the character's profiles and under their picture it says that they are rivals.
11-15-2012 09:15 PM
Obviously dlc pairs are rivals. Am I the only one with common sense?
There are statements that suggest that they could not and we may be seeing another pair be announced and released along side them. Very speculative at this point, really. Hard to not be when they haven;t said one way or the other.