The notable appearance of EX-Type Zero Blue Ring took the AE task force by surprise. Five Knights were killed by Blue Ring and all the other Knights, even Master Knight Leo who broke his right arm, were injured. Leo managed to suppress the Type Zero and it was captured. Near-to-retirement Knight Anne Mayer was supposed to only act as a War Adviser, but she ended up participating in the fight, borrowed Leo's AB Sword Number 10. Square, and directly killed Queen D-38 on April 4, 430 Cosmic Century.
Void was a wasteland inhabited by settlers. They cultivated the land persistently in order to make it habitable, despite the bad conditions this world offered. This frontier planet is where AE sent less than 100,000 soldiers and their families. The volunteers were mostly those who had already lost their homes on other planets and were trying to start over. During the invasion, the survivors were being moved to Arin, but not one wanted to abandon their homes once again. After the conflict was over, all the survivors chose to stay on Void, despite it being labeled a danger zone with remaining Beasts still roaming on the surface.