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.

A century of bloodshed between warring star systems has plunged nearly 200 worlds into the flames of war. Now, an uneasy truce has settled across the Astragius Galaxy... 
Chirico Cuvie, a special forces powered-armor pilot is suddenly transferred into a unit engaged in a secret and highly illegal mission to steal military secrets - from their own military! Now he's on the run...from his own army! 
Unsure of his loyalties and to cover their own tracks, Chirico is left behind to die in space. Surviving by luck, the renegade is now hunted by both the conspirators and military intelligence. 
He is driven by the haunting image of a mysterious and beautiful woman - the objective of their mission, and his sole clue to unraveling their treacherous scheme. But the conspirators will do anything to preserve their mysterious agenda... 
(Source: AnimeNfo)

**Non anime roles:**
- Metaheavy - Kamen Rider Black RX (TV Series)

Released in 1985, this OVA tells a critical part of the story between the TV show's Uoodo and Kummen arcs. Although the TV series covered the Red Shoulders in some detail, we didn't get to see much of Chirico's time there or the people involved, and we get both of those here. 
(Source: mahq.net)

Gurran Schmittel