The Watchers visited this planet to provide scientific advances to its inhabitants, the less advanced Prosilicans. The Prosilicans then used their new knowledge to build weapons and destroy their own civilization. They then blamed the Watchers.
- 3 Appearances of Prosilicus
- Minor Appearances of Prosilicus
- Media Prosilicus was Mentioned in
- 1 Images featuring Prosilicus
- Location Gallery: Prosilicus