Vils Andarion is an Inquisitor of the Ordo Xenos and one of several luminaries drawn to Watch Fortress Erioch in the Jericho Reach since the Jericho-Maw Warp Gate opened. His primary interest is in the gate itself but the dangers in the Well of Night have driven him to Erioch to pursue his investigations.
Here he can at least study data gathered about the Warp Gate in its dormant state throughout the Jericho Reach's Age of Shadow. Andarion keeps a substantial retinue of adepts, savants and servitors at the Tower of Brass, the Inquisitorial headquarters of the watch fortress, for this very purpose. They work night and day seeking after some elusive piece of data Andarion apparently needs.
Inquisitor Andarion has also expressed a keen interest in xenos legends throughout the Jericho Reach, the older and more obscure the better. He has made several expeditions to Jove's Descent and Karlack following in the footsteps of Inquisitor Zaer Vincent.
Andarion's interest in the local myths of a city beneath the sea brought him to Karlack prior to Vincent's disappearance and the two co-operated in the investigation for a time. Andarion has resolved not to let the matter of Inquisitor Vincent's disappearance drop until Vincent, or more likely his slayer, is found.
Of note is that Andarion has a theory that the Warp Gate and several of the older xenos sites scattered around the Jericho Reach are somehow interconnected.
He needs to take readings and analyze data at points scattered all over the Reach to prove or disprove his theory. If he is right, the opening of the Warp Gate portends some truly dire events at those sites in the future.
- Deathwatch: Rites of Battle (RPG), pg. 239