Ain-I of the Neutral (ニュートラルのアインI,Nyūtoraru no Ain Ai?, 41): Ain-I is a Matroid designed by Metal Alice in her own scheme to understand the concept of friendship, placing a remote-controlled Alice Bomb (A（アリス）ボム,Arisu Bomu?) with a 300 meter blast radius in his body. Left in the care of Eri, Ain-I is renamed "Koro" and learns many things before Metal-A deems the experiment a waste of her time and wipes out his memory while activating his battle mode. Though his brain is damaged in the fight, Metal-A enlarges Ain-I and activates the Alice Bomb as Super Gosei Pink manages to use Gosei Ultimate to take Ain-I into the stratosphere before he suddenly reactivates and knocks Gosei Ultimate away to save Eri. Ain-I is named after A.I. Artificial Intelligence (A.I.,Ē Ai?) and modeled after a starfish.