Benicio was a young and eager fellow Inquisitor, usually in a friendly rivalry with Cassandra.
He was deployed to Val Tanza along with Cassandra and Augustus in 641, 5E.
He secretly sabotaged Cassandra's investigation into the threats against the Elleseandi embassy in Treva, and ultimately orchestrated the bombing of the embassy.
His Attack on the Elleseandi Embassy was successful, but he was gravely injured by Cassandra before escaping.
He emerged in the final stages of the Siege of Val Tanza, fighting Cassandra to the death.
He was collapsed after taking a potentially fatal blast of magic from Cassandra, but not before managing to fatally wound her, in return.