Martel

Knight-Commander Martel is first encountered during the meeting with Divine Beatrix III at the Grand Cathedral in Val Royeaux, where he accuses the Seekers of recklessness for not requesting Templar reinforcements for their assault on the blood mage ritual. High Seeker Aldren argued that the Seekers of Truth maintained stealth and discretion, unlike the Templars, a remark that offended Martel. Grand Cleric Callista warned them against arguing openly in the Divine's presence.
Later, at Callista's request, he is dispatched to lead the hunt to apprehend the renegade Seeker Cassandra Pentaghast and Regalyan D'Marcall. While hunting the pair, Martel accidentally reveals that he is Frenic's co-conspirator within the Chantry ranks. The duo manages to steal the elven communication stone he possessed, which he used to contact Frenic, and traps him in a cave. The Knight-Commander survives and anticipates that they will attempt to alert the High Seeker. Infiltrating the Seeker stronghold, Martel murders Aldren before he can alert the Divine of his treachery, framing Cassandra and Regalyan for the deed.
Martel later meets with Callista in a Chantry confession booth to report on his success. Together, they plot to seize control of the Chantry, with Callista as the new Divine, and plan to betray Frenic.
Martel later visits Cassandra and Regalyan in the dungeon, revealing the conspiracy's grand plan: Frenic would use the elven mage, Avexis, to command high dragons to assassinate the Divine and other Grand Clerics at the Ten Year Gathering. From the ashes, Martel would lead the Chantry into a new age where the Templars rule supreme. Cassandra states that the Seekers would never allow him to seize power, but Regalyan suspects that one among the Grand Clerics involved in the conspiracy would become Divine if all others in line for succession were wiped out. Cassandra demands the identity of Martel's co-conspirator, but he refuses to answer.
Martel presides over Cassandra's execution. However, before she is beheaded, the Circle mages summoned by Regalyan attack, enabling Cassandra to escape. Though his Templars are incapacitated, Martel bars their escape and engages Cassandra in a duel. The Seeker accuses him of betrayal, to which he argues he is working to prevent events like Kirkwall from ever occurring again. Cassandra manages to sever his sword arm and orders the Circle mages to bind him to stand trial. However, Martel breaks free and attempts another attack, but Cassandra swiftly decapitates him.