Darth Arkous on Vaiken Spacedock
In 3637 BBY, Darth Arkous summoned an Imperial strike team to assist in the Empire's assault on Tython. Officially, he claimed it would be a crippling blow against the Republic and the Jedi. Unofficially, he dispatched Lord Goh to recover Rakata technology hidden within the Jedi Temple. The attack on Tython was to coincide with Colonel Rian Darok's attack on Korriban, which also hid Rakata technology. When the Empire received word of the attack, Arkous sent the strike team to retake Korriban to keep up appearances, while at the same time, the Republic retook Tython. Arkous attempted to reestablish contact with Goh only to learn that a Republic strike team had killed him. Following the reclamation of Korriban, Arkous gave praise to the Imperial heroes.
Arkous later rendezvoused with Darok on Manaan. Together, they journeyed to an underwater base to meet with a Selkath geneticist named Gorima, to find a way to graft the Rakata technology onto test subjects to create invincible supersoldiers for the Order of Revan. However, Arkous' former assistant Lana Beniko, having collaborated with SIS agent Theron Shan, sent a strike team after them. When they confronted Gorima, Arkous and Darok were watching from an observation room. With Gorima's experiments having successfully made the grafting procedure non-lethal, the two conspirators made their escape, leaving a depth charge to destroy the facility and send their enemies to their deaths, unaware that Shan was present to rescue them before the facility could reach crush depth.
Arkous later sent a coded message to Lana, explaining that he was planning on recruiting her to the Revanites, but his plans changed when she met her new allies. He warned her not to interfere with his plan, cryptically stating that the Revanites are everywhere. Lana and Shan tracked Arkous and Darok to Lehon (or "Rakata Prime", as it was then known), the former capital of the Rakatan Infinite Empire, where the Revanites had salvaged fragments of the destroyed Star Forge for Gorima to advance his experients in the building of an "Infinite Army." The Republic and Imperial pursuers, joined by the vengeful Wookiee smuggler Jakarro and his protocol droid "partner" C2-D4, confronted Arkous and Darok on the roof of the Temple of the Ancients, and killed them, despite Shan's hopes that they be taken alive for questioning. However, it soon became clear that neither Arkous nor Darok were the leader of the Revanites, but followers of the true master of the Order of Revan. The master was soon revealed to be Revan himself.
Lana Beniko was declared a traitor to the Empire and charged with murdering Arkous, a fact she could not contest due to the influence of the Revanites, and was forced to go underground with Shan and Jakarro.
Darth Arkous was an extremely powerful Dark Lord of the Sith. He was of noteworthy skill in lightsaber combat and he was also capable of using Force choke.
Darth Arkous was also capable of using telekinesis and has demonstrated prowess in the use of Force lightning.
Arkous first appeared in Game Update 2.7: Invasion of the 2011 massively-multiplayer online roleplaying video game Star Wars: The Old Republic. The update was released by BioWare on April 8, 2014.
Arkous was featured as a central character in the Imperial storyline of the "Forged Alliances" story arc, a prelude to the main storyline of the 2014 Shadow of Revan digital expansion. He would later reappear in further entries of the story arc, including the "Depths of Manaan" flashpoint introduced in Game Update 2.9: Galactic Strongholds Early Access, released on August 19, 2014.
Arkous made his final appearance in Game Update 2.10: Forged Alliances, released on September 9, 2014. He, along with Darok, his counterpart in the Republic Forged Alliances story arc, make up the final boss fight for the "Legacy of the Rakata" flashpoint that was introduced in the update.
After completing the "Korriban Incursion" flashpoint, Imperial players of any gender have the option to flirt with Arkous, asking him to "take some time to mark the occasion" of driving back Republic forces from Korriban. Arkous turns the player down, stating that he is busy. There are no further opportunities to pursue a romance with Arkous in the game.