Genmu Zero (幻夢零 Genmurei?, "Phantasm Zero") is the attack Zero uses in his awakened state when X fights against him in Mega Man X5. If the battle against Awakened Zero continues for a long period (around 2 minutes), Awakened Zero will become invulnerable and launch two giant crescent waves from his Z-Saber repeatedly, which cover the entire area in front of him and can kill X instantly, making it impossible for X to win the battle after he starts using it, even if X manages to repeatedly use invincible attacks such as the Nova Strike just to stay alive due to the fact Zero will keep spamming the attack, making it an impossible battle.