Board Thread:General Mega Man Discussion/@comment-948616-20131125210000/@comment-35095415-20190806133752

1.How explicit? even in X5, Sigma said "おまえのもっとも大切なゼロを貰うぞ…友にジゴクへ落ちる！さらばだ！エックス…ファーッ，ハハハハッ！", and he is still back in X6. He is brought back in X6 by Gate/Isoc, not by his own will. Even in X7, it's not stated how Sigma come back. So why Sigma can't be back in X9?

2.The Elf Wars is not here yet. The technology for elf war is not shown in X7 and X8. X7 and X8 chose using hardware(copy chip), not software( cyberelf/program) . Although, these could be developed even after X8, I think RZ series has been another timeline from X6's ending.