Duinuogwuin The Duinuogwuin , colloquially called Star Dragons , were among the galaxy ' s more secretive and mysterious species . Biology and appearance . Though variable in appearance , Duinuogwuin generally had serpentine bodies , diaphanous wings , and a pair of legs on each of many body segments . The legs on their frontmost segment were used as arms with fully articulated hands . Their average length was ten meters , but some were rumored to be one hundred meters or more . Duinuogwuin were covered in scales which ranged from various shades of gray or pale blue to black in color . Aside from guesswork based on observations of live Duinuogwuin , little is known of their biology , as they never gave up their bodies to scientific research . Instead , they went to an uncharted planet known as " The Graveyard of the Dragons " to die . It was believed that they had internal organs which acted as repulsorlifts , since their wings were too delicate for such large creatures to take off from any but the lowest gravity planets . Some Star Dragons had the ability to exhale superheated gases , leading to speculation that they also had internal organs capable of organic . One of their most impressive abilities was the ability to fly and survive in the vacuum of deep space for weeks or months at a time . Duinuogwuin could also live as long as 2 , 000 standard years . Their homeworld was unknown , or at least unrevealed by the Star Dragons . Individual Duinuogwuin had been seen on such far - scattered worlds as Cona , Iego , Barab I , and Columus . They had even been sighted in deep space far from any planet . Duinuogwuin were known to have only one sex , though little further was known of their reproductive process . It was known that when two Star Dragons did mate , there was a good chance that they would produce unintelligent offspring , little more than ravening monsters . Such creatures would usually have to be destroyed by their parents . Others showed intelligence , but only in the form of evil cunning . Given the likelihood of having to destroy their own offspring if they mated , most Duinuogwuin lived in isolation from others of their kind . This might have been due to their highly variable genetic code — hatchlings could emerge with genetic adaptations which were not hinted at by their ancestors . Their variable genetics may have led to completely separate species to be descended from the Duinuogwuin . Krayt dragons were believed by some to be the descendants of an accidental concentration of unintelligent Duinuogwuin offspring on Tatooine . Another sentient species , the Kadri ' Ra , were possible relatives of the Duinuogwuin . Duinuogwuin in the galaxy . The Duinuogwuin had a reputation for being wise and mysterious , helped by their very long lifespan and their indifference to questions about their past or their physiology . They were generally calm and even - tempered , and often preoccupied with cosmic musings . They were also noted for a strong , innate sense of morality . While they were friendly and gregarious with other races , the minority of aberrant Star Dragons sought only to manipulate and destroy others . Their part in the history of the galaxy was uncertain : though clearly an ancient civilization , many of the stories were more mythological than historical . Star Dragons featured in the legends of many species , usually appearing as heroes coming to the aid of an oppressed people . However , many of these myths were contradictory , making it difficult to use them to learn details of Duinuogwuin history and origins . In 15 , 500 BBY , the Star Dragons made first contact with the Galactic Republic . Unfortunately , it proved disastrous and sparked the Duinuogwuin Contention , which saw Coruscant assaulted by the Star Dragons . This conflict was ended in a peace negotiated by Supreme Chancellor Fillorean and Duinuogwuin philosopher Borz ' Mat ' oh . Prior to the Clone Wars , the Jedi Masters Jorus C ' baoth and Tra ' s M ' ins mediated a conflict between the Duinuogwuin and the Gotal . At least two Duinuogwuin are known to have served the Republic as Jedi : Jedi Master Willm Lywin who in 4600 BBY founded the Teyan Praxeum on Teya IV , and a Padawan named Zephata ' ru ' tor , who was killed during the Clone Wars by General Grievous . Despite their historically strong moral sense , the Duinuogwuin stayed in isolation during the Galactic Civil War . They denied the fact that approximately one third of Duinuogwuin were Force - sensitives in order to avoid persecution by the Galactic Empire . Rumors about the Duinuogwuin who had served as Jedi in the past were impossible to confirm during the Imperial era , due to the destruction of much of the Order ' s records during the Great Jedi Purge . As late as the Thrawn campaign , it was speculated that the Star Dragons were waiting to see how the conflict would be resolved before rejoining the galactic community .