As a race (War of Kings Warriors #1, 2009)
They possessed advanced technology, although it was not revealed to what level their achievements had reached.
The Strontian race are humanoids with a purplish skin pigmentation, the, possessed pointed ears, two eyes and a nose, as well as two hands consisting of four fingers and an opposable thumb, two legs with a foot attached to both and they consisted of five toes.
By royal decree the Shi'ar's new Imperial Guard was to be a company of elites, each race in the Empire could only send its finest warrior, and this was the highest honor that could be bestowed on any warrior. After the warrior was selected into the Guard his natural abilities, already prodigious, were exalted to gladiator level. Allowing them to serve in the cold vacuum of space and their power would be unmatched throughout the universe. Very few survived this process, even fewer possessed the strength of character to be trusted with its gifts. The Strontian had ten warriors to surpass the first part of the trial, although their elders were unable to make a decision, claiming that there was only person in the entire Empire that could, Majestor T'Korr.While aboard the Shi’ar Imperial flagship “Sharra’s Talon,” T’Korr was concerned about the recruits being so young, but his adviser Chancellor Vitana explained that only the young could survive the “Gladiator Process,” and that an ordinary Strontian could decimate an army single handily. Harrald, although could not stop the determined warrior Strontian from completing his mission. Harrald later learned from a dying Elder that they had already agreed to a bargain that would keep the Shi’ar form using a Starcracker that would sent their Sun to Nova state, which would have destroyed the planet. Kallark knew this and he was the only one of the cadets capable of carrying out this mission.