Chalcedony Renierite
Chalce was a Cluser E.A. student who was killed by the military for fighting and associating with the artificial soldiers. His memories were implanted in Agate and Chrome, and later on his diary was found. Chrome was his private artificial soldier but since Chalce taught him to speak and many other things, he became much more, his friend. When his father did not approve of their friendship and tried to destroy Chrome, Chalce interrupted and accidentally killed his father. Chalce met Agate on a few occasions, last one being the moment when his plane was shot down.