uh zero was wily's creation, not some original that X was based on, see the cutscenes in X4 and a few other games in the series (the arcade game endings have scenes of wily talking about building him). X was made by dr.light and zero by wily to destroy X. if you've played through most or all of the megaman games then i don't really see how you can get that info wrong. Sigma however was based on X, X and Cain used the best tech to make sigma and make him seemingly immune to all viruses (i think that part about the viruses is correct, not sure).
as for legends 3 and universe getting cancelled: CAPCOM SUCKS >.< at least on that move
