[Zeke]

Actually, Cybeast is in the title of the game. There are two versions, Cybeast Gregar and Cybeast Falzar, each one featuring the titular beast. In Japanese it's just "Cyber Beast," but they contracted it for the English version (which was a good idea to avoid confusion, since Alpha, the villain of BN3, was referred to several times as "The Beast").

Another thing I should clarify is the "Cross" thing. The last two games have had a Soul system where MegaMan can sort of merge with another Navi, gaining some of its attributes; for example, merging with GutsMan produces GutsSoul. In BN6, you can do basically the same thing, but the mechanics are different enough that they changed the name -- now it's the Cross system. So fusing with ElecMan gives you ElecCross, and so on.