Triquetra
In 591 EY, a ship approached the Vinka owned planet Agri World, Salkim. It was a strange ship; it did not appear like any of the Legacy ships, and it appeared to fly out of nowhere, rather than appearing from Hyperspace. Salkim's few defenses were raised, but this proved unnecessary as the ship did nothing hostile. The humans on board spoke in an unfamiliar dialect, but were able to make their message clear; they were ambassadors, sent to establish contact with the Lystran Empire. Their home empire they called the Triquetra.
The Triquetra is a union of many star systems, apparently comparable in number to the Empire's. But it is unlike the Empire in many ways. For one thing, it contains aliens. There are two species besides humanity. One is the Vandwrer; vaguely human-like in shape, but possessing elaborate fins and talons. The other, the Ampai, are stranger still; possessing bell-like bodies, with many thin trailing tendrils, they resemble jellyfish more than people. While no species can live places habitable for the others, they talk frequently over radio and cinema.
Their standard-of-living is akin to that of the Empire's commoners, although everyday life is a bit different thanks to the differing technology. They place much emphasis on community, taking their city's name as their surname as if it were a small House. They have expressed distaste at violence; while they have some weaponry, apparently for self-defence, they work to subdue rather than injure. They are also spiritualistic and ritualistic - they meditate or siesta early every afternoon, allegedly sometimes using narcotics as aids. Their scholars think that meditation and introspection is an important part of learning - you learn about yourself as you learn of new things.
The Triquetrans trade, mostly for Legacy technology, cultural artefacts and historical information - Lystran cinema appears to be gaining popularity on their planets. They offer their own strange technology in return: having little access to Legacy technology, they have developed alternatives. For example, their method of space travel varies immensely to our use of Hyperspace - they somehow integrate a Force psychic into their ships, increasing their power over gravitation to the extent they can warp space to move between stars. Another benefit of trade with them is their superior knowledge of chemistry and climate, gained from the need to understand the different species' atmospheres.
Their main route into the Empire remains the planet Salkim (now a major trading destination). Other important planets are those the Empire can reach through Hyperspace and Aaron's Roads - such as the planet of learning, Roulmot, with its great university-cities, and the planet of industry, Klejaso.
The Triquetra has a number of diplomats in the Lystran Empire, as well as trading representatives associated with the largest interstellar companies, and occasionally students in cultural exchanges with Karpeer's Prime University. Their motives remain slightly obscure - presumably from the influence ofaliens in their culture - but they seem content with trade and peace, and are exceedingly careful to avoid offence. Some view this with suspicion.