Board Thread:General Mega Man Discussion/@comment-948616-20131125210000/@comment-1672596-20190806134253

Well, with X7, we can reasonably assume he came back via his own will (and besides, it may have something to do with that briefcase Cider had). And as far as X5, again, he still had a lot of confidence about his plans succeeding regardless, which is in stark contrast to X1, X3, and especially X8. And from the way Lumine was talking, it's unlikely he'll be revived even via outside measures (remember, the only reason Sigma came back in X6 was because Gate stumbled upon a piece of Sigma/Eurasia Space Colony and used that to effectively revive him, though Sigma implied when disposing of Gate that he would have revived himself any ways).

2. I don't recall it being indicated that MMZ was a separate timeline.