The first alien warship to be encountered, this vessel was spotted by a group of independant explorers who had tracked a spore frieghter. They encountered some sort of city-like structure that was apparently a supply base for the freightrs. They located a spacial distortion in the system, which turned out to be an extra-galactic portal. They explorers entered the protal briefly, and encountered the cruiser on the other side. They retreated swiftly, as it launched some sort of telepathic bombardment, perhaps a scan or an attempt at communication, which caused considerable distress to the crew.
Due to the nature of the sensor resistance of the hull, little else is know about this vessel except it is extreme manouverable for it's size, and is presumably well-armed.
Curiously, the first vessel encountered was tan coloured, but all alien vessels encountered since (including those of this class) have all been had the distinctive mirror-smooth metal finish. It is suggested but possible the first vessel was coated in some kind of chinous second skin, though without any kind of sensor data, this is, like everything else, pure speculation.