The current Master of Relics of the Chapter, Sinon oversees the guarding and preservation of the most sacred items of the Ultramarines. He acts as both their watchmen and champion, ensuring that they are not only protected but that new lost treasures may be recovered. To this end, Sinon ensures that the honour guard of the 9th stands watch over the Reclusiam at all times. He also maintains a web of acolytes and serfs who travel the Imperium to watch out for hints of lost Ultramarines artifacts. Should one be discovered, it is Sinon and a force of the 9th that will come seeking it.
- 1: Codex: Space Marines (5th Edition), pg. 17
- 2: Codex Supplement: Ultramarines (8th Edition), pg. 20