The Twilight Realms

 Let's do a pointless trivia about Mega Man X , shall we? Zero's design was actually the original design for Mega Man X, but Capcom were worried that he looked too different from Mega Man, so Keiji Inafune reworked the original design as a separate character and made a new design for X which resembled Mega Man more closely. Keiji would eventually get his wish to have Zero as a main character when the Mega Man Zero games came about. The ending of Mega Man X3 mentions that X must eventually destroy Zero in order to save mankind. This was actually a translation error - the original Japanese script only said that X and Zero would fight at one point, with no mention of it being to the death. Many of the Maverick boss names were changed between Japanese and English. This was mostly done to make them make a bit more sense to English-speaking players, since the original names were mostly half-English half-Japanese puns which wouldn't make much sense to people who didn't know