Zero

Megamans also supposed to be the same in the zero series but his data got corrupted by the same sigma virus we've been fighting for mad dumb long ever since the megaman series that's how sigma gets infected with it because at end game in one of the later megaman games wily is the one who created zero and in the movie short for megaman x sigma punches zero in the gem on his head in which transfers the virus mind u sigma was well respected before meeting zero

No connoniclally zero from the zero series is the same zero it's stated if u read all the box description for all the games the only one that doesn't take place int the same universe is battle network and StarForce both of those Dr light is lnt a robotasist but instead is an internet wave whatever