Although 1AOO shows up in previous chapters, 1AOO can only be killed in 第29 - 8關. 1AOO shows up at the beginning of the battle in 第25 - 4關, spawns clones 1AOO MarkⅠ and leaves. Similarly, 1AOO shows up at the beginning of the battle in 第29 - 6關, spawns clones 1AOO MarkⅡ and leaves.