Story
In the year 21XX, two large Reploid armies currently exist to counter the Mavericks: The Maverick Hunters and the Repliforce. The two organizations cooperated on several occasions, and during this time Zero befriended Colonel and Iris of Repliforce.
But one day, the aerial city Sky Lagoon was attacked by Mavericks, who sabotaged its power generator, causing it to fall to the city below, killing thousands. As Repliforce was present in the area, they were put under suspicion and Colonel was asked that Repliforce surrender for questioning. Having great pride, Colonel refuses and leaves with his sister. Their leader, General, is indignant of the suspicion and starts a coup d'état to build a Reploid-only nation. Although General says they only want to live in peace, not wanting harm for the humans, the entire Repliforce is considered Mavericks, and the Maverick Hunters are sent to stop them, starting the Great Repliforce War. Little do they realize that behind the scenes, a mysterious cloaked figure pitted them against each other, in a bid to wipe out both sides.
Gfs 27938 1 16
Iris and Colonel.
During the war, Iris assists Zero while X is assisted by the rookie Double. After defeating several members of Repliforce, the Hunters fight Colonel and defeat him. Repliforce travels into space to begin their nation, and the Hunters chase after their satellite/space station. When playing as Zero, Iris is angered by her brother's death and fights him. The battle leaves her mortally wounded and she dies in Zero's arms. As X, it's revealed that Double was a spy of the cloaked figure and the two fight, resulting in Double's death; but not before insulting X for his naivety. The Hunters finally reach General and a battle ensues that leaves him severely wounded. Suddenly, the weapon in the station prepares to destroy Earth, and the cloaked figure is revealed to be Sigma. Sigma is destroyed by the Hunters, but the weapon can't be stopped by them. General sacrifices himself to stop the weapon, and the station explodes.