Syneson Lon was an intelligence operative working on Galatea in the closing years of the Third Succession War. He was a nondescript, middle-aged man of forgettable appearance. Lon posed as an official with the Galatean Port Authority in hopes of learning about the intended destination of the Gray Death Legion. He spied on an exchange between Lori Kalmar and Grayson Carlyle and discovered that they were bound for the occupied planet of Verthandi. Lon passed this information along to authorities in the Draconis Combine.
- Mercenary's Star, pp. 16-17, Syneson Lon observes the Gray Death's departure preparations
- Mercenary's Star, pp. 48-49, Lon's message reaches the base on Verthandi-Alpha
- Mercenary's Star (Novel)