Riley was a former war criminal from the Polygamy Wars. Metisian by birth, he settled on Amargosa. During the Gelt Incursion, he joined Tyler Wat on the mission to reach the Ban Ki-moon. He had not quite given up his Goshenite beliefs. Davra Andraste noted that he smelled badly.
After Hauser‘s execution, Riley continued to harass Trixie, earning him contempt from Wat and the threat of a Section 11 from Suicide. At the bunker, Riley again tried to attack Trixie while in JT’s custody, starting yet another brawl. However, he knocked JT into a wall, exposing the entry panel and allowing the team to enter.
Even after escaping the bunker, Riley continued to pick fights with JT Austin and to harass Tishla. Frequently, if Wat or Suicide did not threaten him, Boone, the mute, would intervene and force him to back off. When JT and Wat returned with a working vehicle, Suicide ordered Riley to ride with her under Boone’s supervision. She sent JT to mind Tishla and ride with Wat. She also informed Riley she would be perfectly willing to Section 11 him for the good of the team. Riley doubted she would do it.
He was among those who pretended to defect with Tyler Wat to Lucius Kray’s militia. The others included Eric Yuwono and Boone. He went on the recon mission to meet Colonel Diana Jovann‘s group ahead of their meeting with Kray. Rey Yuwono expressed surprise that a human being could smell so bad.