Mass Effect 3
Garrus Vakarian is a noted turian sharpshooter and combat engineer. He was born on Palaven and became a Citadel Security officer like his father, but left the force when superior's shut down his investigation into the rogue Spectre Saren Arterius. Vakarian eventually discovered that Saren had been indoctrinated by the Reaper known as Sovereign.
Vakarian eventually found his way to the criminal haven of Omega and assumed the name Archangel. There, he and a small group of operatives worked to disrupt the settlement's powerful mercenary groups until Shepard recruited him. The turian narrowly survived the second Normandy's attack on the Collectors. More recently, Vakarian has become the head of a turian task force focused on preparing for a Reaper invasion.