Twin brothers and co-conspirators under Albert Killy, they are scientists pursuing all that can be learned about the Perfect Soldier. They regard Ypsilon as a demigod and were instrumental in his creation. After observing his final battle with Chirico on Sunsa, they continue to work for Killy and wind up in the middle of the mysterious that unfold on planet Quent. As they become more and more captivated by the secrets there, Arron develops slightly more ambition, but until that point, they only prominent difference between them is the color of their clothing; Arron wears brown, Gurran wears green.
