SuperShyGuy62 said:
I am dissapointed that Original Mega man is not in it and Mega man from the Legends series is. Plus my biggest complaint......ZERO OVER PROTOMAN!?!?!? WTH?!?!
They wanted representation from a multitude of MegaMan series'. Classic Roll is more recognisable than Legends or EXE Roll, and so she goes in above other Rolls. Then you have the cult classic MegaMan Legends, which has a strong but small fan following, so putting Volnutt in made a lot of people happy.
And why Zero? Well the original TvC already had Roll in it. Protoman is a Classic series character (or EXE, but w/e), so really they needed rep from a series they hadn't gone for yet 
It's not a big deal, they just didn't want every single MM character to be from the Classic Series alone.